CVE-2023-25566
Prior to version 1.2.0, a memory leak can be triggered when parsing usernames which can trigger a denial-of-service.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.10% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- gss-ntlmssp project/gss-ntlmssp
- Source
- security-advisories@github.com
References
- https://github.com/gssapi/gss-ntlmssp/commit/8660fb16474054e692a596e9c79670cd4d3954f4Patch, Third Party Advisory
- https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0Third Party Advisory
- https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-mfm4-6g58-jw74Third Party Advisory
- https://github.com/gssapi/gss-ntlmssp/commit/8660fb16474054e692a596e9c79670cd4d3954f4Patch, Third Party Advisory
- https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0Third Party Advisory
- https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-mfm4-6g58-jw74Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.