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CVE-2022-3437

6.5 · MEDIUM

A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal.

Published Jan 12, 2023CWE-122EPSS 3.86%

Overview

CVE-2022-3437 is a medium-severity vulnerability. It was published on January 12, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2023/02/08/1Refaccess.redhat.com/security/cve/CVE-2022-3437Refbugzilla.redhat.com/show_bug.cgi?id=2137774Reflists.debian.org/debian-lts-announce/2024/04/msg00015.htmlRefsecurity.gentoo.org/glsa/202309-06Refsecurity.gentoo.org/glsa/202310-06Refsecurity.netapp.com/advisory/ntap-20230216-0008/Refwww.samba.org/samba/security/CVE-2022-3437.htmlRefwww.openwall.com/lists/oss-security/2023/02/08/1Refaccess.redhat.com/security/cve/CVE-2022-3437

How CyberStrike helps

Frequently asked questions

What is CVE-2022-3437?

CVE-2022-3437 is a medium-severity vulnerability. It was published on January 12, 2023 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2022-3437?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-3437?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-3437?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-3437 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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