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CVE-2023-25566

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2023-3097-01
Posted May 16, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-3097-01 - The gssntlmssp is a GSSAPI NTLM mechanism that allows to perform NTLM authentication in GSSAPI programs. Issues addressed include memory leak and out of bounds read vulnerabilities.

tags | advisory, vulnerability, memory leak
systems | linux, redhat
advisories | CVE-2023-25563, CVE-2023-25564, CVE-2023-25565, CVE-2023-25566, CVE-2023-25567
SHA-256 | 847c8312f217e99ed415b61db0699adeda1300a006d99e9eddf28f3508c0c38d
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