Vulnerability in Gssapi Gss-Ntlmssp
CVE-2023-25565
GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This will likely trigger an assertion failure in `free`, causing a denial-of-service. This issue is fixed in version 1.2.0.
EPSS: 0.011 (63.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Gssapi Gss-ntlmssp — versions < 1.2.0
- Gss-ntlmssp_project Gss-ntlmssp
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-25565?
- CVE-2023-25565 is a high-severity vulnerability in Gssapi Gss-Ntlmssp, classified under CWE-590. CVSS score: 7.5/10. Published 2023-02-14.
- How severe is CVE-2023-25565?
- High severity. CVSS v3 base score is 7.5 out of 10.