Memory Leak Affecting gssntlmssp package, versions <0:1.2.0-1.el8_8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (47th percentile)

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  • Snyk IDSNYK-RHEL8-GSSNTLMSSP-5543702
  • published21 Feb 2023
  • disclosed14 Feb 2023

Introduced: 14 Feb 2023

CVE-2023-25566  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade RHEL:8 gssntlmssp to version 0:1.2.0-1.el8_8 or higher.
This issue was patched in RHSA-2023:3097.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gssntlmssp package and not the gssntlmssp package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, a memory leak can be triggered when parsing usernames which can trigger a denial-of-service. The domain portion of a username may be overridden causing an allocated memory area the size of the domain name to be leaked. An attacker can leak memory via the main gss_accept_sec_context entry point, potentially causing a denial-of-service. This issue is fixed in version 1.2.0.

CVSS Scores

version 3.1