xen xen CVE-2022-29901 vulnerability in Citrix Xen and Other Products
Published on July 12, 2022

Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

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Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions.

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Vulnerability Analysis

CVE-2022-29901 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
LOCAL
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

What is an Information Disclosure Vulnerability?

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

CVE-2022-29901 has been classified to as an Information Disclosure vulnerability or weakness.


Products Associated with CVE-2022-29901

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2022-29901 are published in these products:

Citrix Xen Xen
 
Fedora Project Fedora
 
VMware ESXi
 
Canonical Ubuntu Linux
 
Debian Linux
 

Affected Versions

Intel Microprocessors Version generations 6 to 8 is affected by CVE-2022-29901

Exploit Probability

EPSS
0.08%
Percentile
23.86%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.