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By the Year

In 2021 there have been 14 vulnerabilities in Openldap with an average score of 7.5 out of ten. Last year Openldap had 3 security vulnerabilities published. That is, 11 more vulnerabilities have already been reported in 2021 as compared to last year. However, the average CVE base score of the vulnerabilities in 2021 is greater by 1.10.

Year Vulnerabilities Average Score
2021 14 7.50
2020 3 6.40
2019 2 6.20
2018 0 0.00

It may take a day or so for new Openldap vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Openldap Security Vulnerabilities

A flaw was found in OpenLDAP in versions before 2.4.56

CVE-2020-25710 7.5 - High - May 28, 2021

A flaw was found in OpenLDAP in versions before 2.4.56. This flaw allows an attacker who sends a malicious packet processed by OpenLDAP to force a failed assertion in csnNormalize23(). The highest threat from this vulnerability is to system availability.

assertion failure

Ethereum 0xe933c0cd9784414d5f278c114904f5a84b396919#code.sol latest version is affected by a denial of service vulnerability in the affected payout function

CVE-2020-20178 7.5 - High - May 24, 2021

Ethereum 0xe933c0cd9784414d5f278c114904f5a84b396919#code.sol latest version is affected by a denial of service vulnerability in the affected payout function. Once the length of this array is too long, it will result in an exception. Attackers can make attacks by creating a series of account addresses.

assertion failure

A flaw was found in OpenLDAP

CVE-2020-25709 7.5 - High - May 18, 2021

A flaw was found in OpenLDAP. This flaw allows an attacker who can send a malicious packet to be processed by OpenLDAPs slapd server, to trigger an assertion failure. The highest threat from this vulnerability is to system availability.

assertion failure

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function

CVE-2021-27212 7.5 - High - February 14, 2021

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.

assertion failure

A flaw was discovered in OpenLDAP before 2.4.57 leading to a double free and slapd crash in the saslAuthzTo processing

CVE-2020-36225 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading to a double free and slapd crash in the saslAuthzTo processing, resulting in denial of service.

Double-free

A flaw was discovered in OpenLDAP before 2.4.57 leading in an assertion failure in slapd in the X.509 DN parsing in decode.c ber_next_element

CVE-2020-36230 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading in an assertion failure in slapd in the X.509 DN parsing in decode.c ber_next_element, resulting in denial of service.

assertion failure

A flaw was discovered in ldap_X509dn2bv in OpenLDAP before 2.4.57 leading to a slapd crash in the X.509 DN parsing in ad_keystring

CVE-2020-36229 7.5 - High - January 26, 2021

A flaw was discovered in ldap_X509dn2bv in OpenLDAP before 2.4.57 leading to a slapd crash in the X.509 DN parsing in ad_keystring, resulting in denial of service.

Object Type Confusion

An integer underflow was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Certificate List Exact Assertion processing

CVE-2020-36228 7.5 - High - January 26, 2021

An integer underflow was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Certificate List Exact Assertion processing, resulting in denial of service.

Integer underflow

A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the

CVE-2020-36227 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading to an infinite loop in slapd with the cancel_extop Cancel operation, resulting in denial of service.

Infinite Loop

A flaw was discovered in OpenLDAP before 2.4.57 leading to a memch->bv_len miscalculation and slapd crash in the saslAuthzTo processing

CVE-2020-36226 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading to a memch->bv_len miscalculation and slapd crash in the saslAuthzTo processing, resulting in denial of service.

A flaw was discovered in OpenLDAP before 2.4.57 leading to an invalid pointer free and slapd crash in the saslAuthzTo processing

CVE-2020-36224 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading to an invalid pointer free and slapd crash in the saslAuthzTo processing, resulting in denial of service.

Release of Invalid Pointer or Reference

A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling

CVE-2020-36223 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).

Out-of-bounds Read

A flaw was discovered in OpenLDAP before 2.4.57 leading to an assertion failure in slapd in the saslAuthzTo validation

CVE-2020-36222 7.5 - High - January 26, 2021

A flaw was discovered in OpenLDAP before 2.4.57 leading to an assertion failure in slapd in the saslAuthzTo validation, resulting in denial of service.

assertion failure

An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing

CVE-2020-36221 7.5 - High - January 26, 2021

An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).

Integer underflow

A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs

CVE-2020-25692 7.5 - High - December 08, 2020

A NULL pointer dereference was found in OpenLDAP server and was fixed in openldap 2.4.55, during a request for renaming RDNs. An unauthenticated attacker could remotely crash the slapd process by sending a specially crafted request, causing a Denial of Service.

NULL Pointer Dereference

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support

CVE-2020-15719 4.2 - Medium - July 14, 2020

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Improper Certificate Validation

In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions

CVE-2020-12243 7.5 - High - April 28, 2020

In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).

Resource Exhaustion

An issue was discovered in the server in OpenLDAP before 2.4.48

CVE-2019-13057 4.9 - Medium - July 26, 2019

An issue was discovered in the server in OpenLDAP before 2.4.48. When the server administrator delegates rootDN (database admin) privileges for certain databases but wants to maintain isolation (e.g., for multi-tenant deployments), slapd does not properly stop a rootDN from requesting authorization as an identity from another database during a SASL bind or with a proxyAuthz (RFC 4370) control. (It is not a common configuration to deploy a system where the server administrator and a DB administrator enjoy different levels of trust.)

An issue was discovered in OpenLDAP 2.x before 2.4.48

CVE-2019-13565 7.5 - High - July 26, 2019

An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.

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