Out-of-bounds read in Gss-ntlmssp - CVE-2023-25567

Vulnerability identifier: #VU76197

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-25567

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when decoding target information. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Gss-ntlmssp
Fedora
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Anolis OS
Ubuntu
openEuler
gss-ntlmssp (Ubuntu package)
gssntlmssp
gssntlmssp-debuginfo
gssntlmssp-devel
gssntlmssp-help
gssntlmssp-debugsource
gssntlmssp (Red Hat package)
gssntlmssp-doc

Install updates from vendor's website.

Gss-ntlmssp - update to 1.2.0
gss-ntlmssp (Ubuntu package) - addressed in versions 0.7.0-3~ubuntu0.16.04.1+esm1, 0.7.0-4ubuntu0.18.04.1~esm1, 0.7.0-4ubuntu0.20.04.1~esm1, 0.7.0-4ubuntu0.22.04.1~esm1
gssntlmssp - update to 0.7.0-9
gssntlmssp-debuginfo - update to 0.7.0-9
gssntlmssp-devel - update to 0.7.0-9
gssntlmssp-help - update to 0.7.0-9
gssntlmssp-debugsource - update to 0.7.0-9
gssntlmssp - addressed in versions 1.2.0-1.el7, 1.2.0-1.fc37
gssntlmssp (Red Hat package) - update to 1.2.0-1.el8_8
gssntlmssp - update to 1.2.0-1.0.1
gssntlmssp-doc - update to 1.2.0-1.0.1

• https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-24pf-6prf-24ch
• https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0
• https://github.com/gssapi/gss-ntlmssp/commit/025fbb756d44ffee8f847db4222ed6aa4bd1fbe4

• Multiple vulnerabilities in Gss-ntlmssp
• Red Hat Enterprise Linux 8 update for gssntlmssp
• Fedora 37 update for gssntlmssp
• Fedora EPEL 7 update for gssntlmssp
• openEuler update for gssntlmssp
• Anolis OS update for gssntlmssp
• Ubuntu update for gss-ntlmssp