Memory leak in Gss-ntlmssp - CVE-2023-25566

Vulnerability identifier: #VU76196

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-2023-25566

CWE-ID: CWE-401

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak when parsing usernames. A remote attacker can force the application to leak memory and perform denial of service 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
gssntlmssp
gssntlmssp (Red Hat package)
gssntlmssp-doc

Install updates from vendor's website.

Gss-ntlmssp - update to 1.2.0
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-mfm4-6g58-jw74
• https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0
• https://github.com/gssapi/gss-ntlmssp/commit/8660fb16474054e692a596e9c79670cd4d3954f4

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