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CVE-2023-25567

Status Candidate

Overview

GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The 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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