CVE-2022-42898 is a high-severity vulnerability affecting certain versions of MIT Kerberos 5, Heimdal, and Samba software configurations, primarily on 32-bit platforms. This vulnerability can lead to remote code execution and denial of service on affected systems. It is important for organizations using these software configurations to update to the latest versions to mitigate the risk posed by this vulnerability.

How do I know if I'm affected?

If you're using certain versions of MIT Kerberos 5, Heimdal, or Samba software, you might be affected by the vulnerability. Affected versions include MIT Kerberos 5 before 1.19.4 and 1.20.x before 1.20.1, Heimdal before 7.7.1, and Samba before 4.15.12, 4.16.0 to 4.16.7, and 4.17.0 to 4.17.3. This vulnerability primarily impacts 32-bit platforms and can lead to remote code execution and denial of service. To determine if you're affected, check the software versions you're using and compare them to the affected versions listed above.

What should I do if I'm affected?

If you're affected by the vulnerability, it's crucial to update your software to the latest versions. For MIT Kerberos 5, update to 1.19.4 or 1.20.1. For Heimdal, update to 7.7.1. For Samba, update to 4.15.12, 4.16.7, or 4.17.3. Consult your software's documentation or support resources for update instructions.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2022-42898 vulnerability is not listed in CISA's Known Exploited Vulnerabilities Catalog. This vulnerability, known as PAC parsing integer overflows in MIT Kerberos 5, was added to the NVD on December 25, 2022. Users are advised to follow recommendations provided in various references to mitigate the vulnerability. This vulnerability can lead to remote code execution and denial of service on affected systems, and updating the affected software is crucial to address the issue.

Weakness enumeration

The weakness enumeration for this vulnerability is categorized as CWE-190, referring to Integer Overflow or Wraparound. This involves integer overflows in PAC parsing, which can lead to remote code execution and denial of service.

For more details

CVE-2022-42898 is a significant vulnerability affecting certain software configurations, with potential consequences such as remote code execution and denial of service. By updating to the latest software versions and following the recommendations provided, users can mitigate the risks associated with this vulnerability. For a comprehensive understanding of the vulnerability, including its description, severity, technical details, and known affected software configurations, visit the NVD page or the links below.

• Kerberos 5 Release 1.19.4

• The Samba-Bugzilla – Bug 15203

• Samba: Multiple Vulnerabilities (GLSA 202309-06) — Gentoo security

• December 2022 Heimdal Vulnerabilities in NetApp Products | NetApp Product Security