Red Hat Keycloak

Keycloak: Sensitive Information Disclosure in JGroups Replication Configuration

CVE-2024-10973 5.7 - Medium - December 17, 2024

A vulnerability was found in Keycloak. The environment option `KC_CACHE_EMBEDDED_MTLS_ENABLED` does not work and the JGroups replication configuration is always used in plain text which can allow an attacker that has access to adjacent networks related to JGroups to read sensitive information.

Cleartext Transmission of Sensitive Information

Keycloak Server: Denial of Service via Improper Proxy Header Validation

CVE-2024-9666 4.7 - Medium - November 25, 2024

A vulnerability was found in the Keycloak Server. The Keycloak Server is vulnerable to a denial of service (DoS) attack due to improper handling of proxy headers. When Keycloak is configured to accept incoming proxy headers, it may accept non-IP values, such as obfuscated identifiers, without proper validation. This issue can lead to costly DNS resolution operations, which an attacker could exploit to tie up IO threads and potentially cause a denial of service. The attacker must have access to send requests to a Keycloak instance that is configured to accept proxy headers, specifically when reverse proxies do not overwrite incoming headers, and Keycloak is configured to trust these headers.

HTTP Request Smuggling

Keycloak-services: Denial of Service via Regex Complexity in SearchQueryUtils

CVE-2024-10270 6.5 - Medium - November 25, 2024

A vulnerability was found in the Keycloak-services package. If untrusted data is passed to the SearchQueryUtils method, it could lead to a denial of service (DoS) scenario by exhausting system resources due to a Regex complexity.

ReDoS

Keycloak Information Disclosure Vulnerability in Build Process

CVE-2024-10451 5.9 - Medium - November 25, 2024

A flaw was found in Keycloak. This issue occurs because sensitive runtime values, such as passwords, may be captured during the Keycloak build process and embedded as default values in bytecode, leading to unintended information disclosure. In Keycloak 26, sensitive data specified directly in environment variables during the build process is also stored as a default values, making it accessible during runtime. Indirect usage of environment variables for SPI options and Quarkus properties is also vulnerable due to unconditional expansion by PropertyMapper logic, capturing sensitive data as default values in all Keycloak versions up to 26.0.2.

Use of Hard-coded Credentials

Keycloak Privilege Escalation via Vault File Access

CVE-2024-10492 - November 25, 2024

A vulnerability was found in Keycloak. A user with high privileges could read sensitive information from a Vault file that is not within the expected context. This attacker must have previous high access to the Keycloak server in order to perform resource creation, for example, an LDAP provider configuration and set up a Vault read file, which will only inform whether that file exists or not.

External Control of File Name or Path

Keycloak: Improper Token Type Enforcement in Signature Validation

CVE-2023-0657 3.4 - Low - November 17, 2024

A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.

Improper Check for Dropped Privileges

Keycloak LDAP Injection Vulnerability

CVE-2022-2232 7.5 - High - November 14, 2024

A flaw was found in the Keycloak package. This flaw allows an attacker to utilize an LDAP injection to bypass the username lookup or potentially perform other malicious actions.

Improper Input Validation

A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited

CVE-2023-6841 7.5 - High - September 10, 2024

A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.

Improper Handling of Extra Values

An open redirect vulnerability was found in Keycloak

CVE-2024-7260 6.1 - Medium - September 09, 2024

An open redirect vulnerability was found in Keycloak. A specially crafted URL can be constructed where the referrer and referrer_uri parameters are made to trick a user to visit a malicious webpage. A trusted URL can trick users and automation into believing that the URL is safe, when, in fact, it redirects to a malicious server. This issue can result in a victim inadvertently trusting the destination of the redirect, potentially leading to a successful phishing attack or other types of attacks. Once a crafted URL is made, it can be sent to a Keycloak admin via email for example. This will trigger this vulnerability when the user visits the page and clicks the link. A malicious actor can use this to target users they know are Keycloak admins for further attacks. It may also be possible to bypass other domain-related security checks, such as supplying this as a OAuth redirect uri. The malicious actor can further obfuscate the redirect_uri using URL encoding, to hide the text of the actual malicious website domain.

Open Redirect

A session fixation issue was discovered in the SAML adapters provided by Keycloak

CVE-2024-7341 7.1 - High - September 09, 2024

A session fixation issue was discovered in the SAML adapters provided by Keycloak. The session ID and JSESSIONID cookie are not changed at login time, even when the turnOffChangeSessionIdOnLogin option is configured. This flaw allows an attacker who hijacks the current session before authentication to trigger session fixation.

Session Fixation

A vulnerability was found in Keycloak

CVE-2024-4629 6.5 - Medium - September 03, 2024

A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, attackers can exceed the configured limits for failed attempts before the system locks them out. This timing loophole enables attackers to make more guesses at passwords than intended, potentially compromising account security on affected systems.

Improper Enforcement of a Single, Unique Action

A flaw was found in Keycloak

CVE-2024-1722 5.3 - Medium - February 29, 2024

A flaw was found in Keycloak. In certain conditions, this issue may allow a remote unauthenticated attacker to block other accounts from logging in.

Overly Restrictive Account Lockout Mechanism

A flaw was found in the redirect_uri validation logic in Keycloak

CVE-2023-6291 7.1 - High - January 26, 2024

A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.

Open Redirect

A flaw was found in Keycloak

CVE-2023-6927 6.1 - Medium - December 18, 2023

A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.

Open Redirect

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such

CVE-2023-48795 5.9 - Medium - December 18, 2023

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.

Improper Validation of Integrity Check Value

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token

CVE-2023-6134 5.4 - Medium - December 14, 2023

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.

XSS

An unconstrained memory consumption vulnerability was discovered in Keycloak

CVE-2023-6563 7.7 - High - December 14, 2023

An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens (> 500,000 users with each having at least 2 saved sessions). If an attacker creates two or more user sessions and then open the "consents" tab of the admin User Interface, the UI attempts to load a huge number of offline client sessions leading to excessive memory and CPU consumption which could potentially crash the entire system.

Allocation of Resources Without Limits or Throttling

A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling

CVE-2022-4137 6.1 - Medium - September 25, 2023

A reflected cross-site scripting (XSS) vulnerability was found in the 'oob' OAuth endpoint due to incorrect null-byte handling. This issue allows a malicious link to insert an arbitrary URI into a Keycloak error page. This flaw requires a user or administrator to interact with a link in order to be vulnerable. This may compromise user details, allowing it to be changed or collected by an attacker.

XSS

A flaw was found in the offline_access scope in Keycloak

CVE-2022-3916 6.8 - Medium - September 20, 2023

A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.

Insufficient Session Expiration

A flaw was found in Keycloak

CVE-2022-1438 4.8 - Medium - September 20, 2023

A flaw was found in Keycloak. Under specific circumstances, HTML entities are not sanitized during user impersonation, resulting in a Cross-site scripting (XSS) vulnerability.

XSS

A flaw was found in the Keycloak package, more specifically org.keycloak.userprofile

CVE-2023-4918 8.8 - High - September 12, 2023

A flaw was found in the Keycloak package, more specifically org.keycloak.userprofile. When a user registers itself through registration flow, the "password" and "password-confirm" field from the form will occur as regular user attributes. All users and clients with proper rights and roles are able to read users attributes, allowing a malicious user with minimal access to retrieve the users passwords in clear text, jeopardizing their environment.

Cleartext Transmission of Sensitive Information

A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests

CVE-2023-0264 5 - Medium - August 04, 2023

A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to impersonate the victim and generate new session tokens. This issue could impact confidentiality, integrity, and availability.

authentification

Keycloak

CVE-2022-4361 6.1 - Medium - July 07, 2023

Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.

XSS

A flaw was found in Keycloak

CVE-2023-1664 6.5 - Medium - May 26, 2023

A flaw was found in Keycloak. This flaw depends on a non-default configuration "Revalidate Client Certificate" to be enabled and the reverse proxy is not validating the certificate before Keycloak. Using this method an attacker may choose the certificate which will be validated by the server. If this happens and the KC_SPI_TRUSTSTORE_FILE_FILE variable is missing/misconfigured, any trustfile may be accepted with the logging information of "Cannot validate client certificate trust: Truststore not available". This may not impact availability as the attacker would have no access to the server, but consumer applications Integrity or Confidentiality may be impacted considering a possible access to them. Considering the environment is correctly set to use "Revalidate Client Certificate" this flaw is avoidable.

Improper Certificate Validation

A flaw was found in Keycloak in the execute-actions-email endpoint

CVE-2022-1274 5.4 - Medium - March 29, 2023

A flaw was found in Keycloak in the execute-actions-email endpoint. This issue allows arbitrary HTML to be injected into emails sent to Keycloak users and can be misused to perform phishing or other attacks against users.

XSS

keycloak: path traversal via double URL encoding

CVE-2022-3782 9.1 - Critical - January 13, 2023

keycloak: path traversal via double URL encoding. A flaw was found in Keycloak, where it does not properly validate URLs included in a redirect. An attacker can use this flaw to construct a malicious request to bypass validation and access other URLs and potentially sensitive information within the domain or possibly conduct further attacks. This flaw affects any client that utilizes a wildcard in the Valid Redirect URIs field.

Directory traversal

A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow

CVE-2023-0091 3.8 - Low - January 13, 2023

A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow. This flaw allows an attacker to access or modify potentially sensitive information.

AuthZ

A flaw was found in Keycloak

CVE-2023-0105 6.5 - Medium - January 13, 2023

A flaw was found in Keycloak. This flaw allows impersonation and lockout due to the email trust not being handled correctly in Keycloak. An attacker can shadow other users with the same email and lockout or impersonate them.

authentification

Rejected reason: The originally reported issue in https://github.com/syedsohaibkarim/OpenRedirect-Keycloak18.0.0 is a known misconfiguration

CVE-2022-1970 - October 19, 2022

Rejected reason: The originally reported issue in https://github.com/syedsohaibkarim/OpenRedirect-Keycloak18.0.0 is a known misconfiguration, and recommendation already exists in the Keycloak documentation to mitigate the issue: https://www.keycloak.org/docs/latest/server_admin/index.html#open-redirectors.

A flaw was found in Keycloak

CVE-2022-0225 5.4 - Medium - August 26, 2022

A flaw was found in Keycloak. This flaw allows a privileged attacker to use the malicious payload as the group name while creating a new group from the admin console, leading to a stored Cross-site scripting (XSS) attack.

XSS

A flaw was found in Keycloak

CVE-2021-3632 7.5 - High - August 26, 2022

A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow.

authentification

A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user

CVE-2021-3754 5.3 - Medium - August 26, 2022

A flaw was found in keycloak where an attacker is able to register himself with the username same as the email ID of any existing user. This may cause trouble in getting password recovery email in case the user forgets the password.

ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader

CVE-2021-3856 4.3 - Medium - August 26, 2022

ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.

Directory traversal

A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed

CVE-2021-3827 6.8 - Medium - August 23, 2022

A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity.

authentification

A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0

CVE-2020-35509 5.4 - Medium - August 23, 2022

A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.

Improper Certificate Validation

A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled

CVE-2021-3513 7.5 - High - August 22, 2022

A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality.

Generation of Error Message Containing Sensitive Information

An issue was discovered in Keycloak

CVE-2022-2668 7.2 - High - August 05, 2022

An issue was discovered in Keycloak that allows arbitrary Javascript to be uploaded for the SAML protocol mapper even if the UPLOAD_SCRIPTS feature is disabled

A privilege escalation flaw was found in the token exchange feature of keycloak

CVE-2022-1245 9.8 - Critical - July 08, 2022

A privilege escalation flaw was found in the token exchange feature of keycloak. Missing authorization allows a client application holding a valid access token to exchange tokens for any target client by passing the client_id of the target. This could allow a client to gain unauthorized access to additional services.

Insecure Direct Object Reference / IDOR

Due to improper authorization, Red Hat Single Sign-On is vulnerable to users performing actions that they should not be allowed to perform

CVE-2022-1466 6.5 - Medium - April 26, 2022

Due to improper authorization, Red Hat Single Sign-On is vulnerable to users performing actions that they should not be allowed to perform. It was possible to add users to the master realm even though no respective permission was granted.

AuthZ

A flaw was found in keycloak where keycloak may fail to logout user session if the logout request comes

CVE-2021-3461 7.1 - High - April 01, 2022

A flaw was found in keycloak where keycloak may fail to logout user session if the logout request comes from external SAML identity provider and Principal Type is set to Attribute [Name].

Insufficient Session Expiration

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

CVE-2021-20323 6.1 - Medium - March 25, 2022

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

XSS

A flaw was found in Keycloak in versions from 12.0.0 and before 15.1.1 which

CVE-2021-4133 8.8 - High - January 25, 2022

A flaw was found in Keycloak in versions from 12.0.0 and before 15.1.1 which allows an attacker with any existing user account to create new default user accounts via the administrative REST API even when new user registration is disabled.

AuthZ

A flaw was found in keycloak-model-infinispan in keycloak versions before 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly

CVE-2021-3637 7.5 - High - July 09, 2021

A flaw was found in keycloak-model-infinispan in keycloak versions before 14.0.0 where authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly which could lead to a DoS attack.

Allocation of Resources Without Limits or Throttling

A flaw was found in keycloak in versions before 13.0.0

CVE-2021-20195 9.6 - Critical - May 28, 2021

A flaw was found in keycloak in versions before 13.0.0. A Self Stored XSS attack vector escalating to a complete account takeover is possible due to user-supplied data fields not being properly encoded and Javascript code being used to process the data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Output Sanitization

A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API

CVE-2020-27826 4.2 - Medium - May 28, 2021

A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.

Execution with Unnecessary Privileges

A flaw was found in keycloak

CVE-2021-20202 7.3 - High - May 12, 2021

A flaw was found in keycloak. Directories can be created prior to the Java process creating them in the temporary directory, but with wider user permissions, allowing the attacker to have access to the contents that keycloak stores in this directory. The highest threat from this vulnerability is to data confidentiality and integrity.

Insecure Temporary File

A flaw was found in keycloak

CVE-2021-20222 7.5 - High - March 23, 2021

A flaw was found in keycloak. The new account console in keycloak can allow malicious code to be executed using the referrer URL. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

XSS

A flaw was found in Keycloak 12.0.0 where re-authentication does not occur while updating the password

CVE-2021-20262 6.8 - Medium - March 09, 2021

A flaw was found in Keycloak 12.0.0 where re-authentication does not occur while updating the password. This flaw allows an attacker to take over an account if they can obtain temporary, physical access to a users browser. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Missing Authentication for Critical Function

A flaw was found in keycloak in versions prior to 13.0.0

CVE-2020-27838 6.5 - Medium - March 08, 2021

A flaw was found in keycloak in versions prior to 13.0.0. The client registration endpoint allows fetching information about PUBLIC clients (like client secret) without authentication which could be an issue if the same PUBLIC client changed to CONFIDENTIAL later. The highest threat from this vulnerability is to data confidentiality.

authentification

A vulnerability was found in all versions of Keycloak Gatekeeper, where on using lower case HTTP headers (

CVE-2020-14359 7.3 - High - February 23, 2021

A vulnerability was found in all versions of Keycloak Gatekeeper, where on using lower case HTTP headers (via cURL) an attacker can bypass our Gatekeeper. Lower case headers are also accepted by some webservers (e.g. Jetty). This means there is no protection when we put a Gatekeeper in front of a Jetty server and use lowercase headers.

Authentication Bypass by Primary Weakness