{"id":"UBUNTU-CVE-2023-25566","details":"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 This issue is fixed in version 1.2.0.","modified":"2025-07-16T07:57:31.410697Z","published":"2023-02-14T18:15:00Z","withdrawn":"2025-07-18T16:54:22Z","upstream":["CVE-2023-25566"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-25566"},{"type":"REPORT","url":"https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-mfm4-6g58-jw74"},{"type":"REPORT","url":"https://github.com/gssapi/gss-ntlmssp/commit/8660fb16474054e692a596e9c79670cd4d3954f4"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-25566"}],"affected":[{"package":{"name":"gss-ntlmssp","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/gss-ntlmssp@1.2.0-1build3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-1build3"}]}],"versions":["1.2.0-1","1.2.0-1build1","1.2.0-1build2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gss-ntlmssp","binary_version":"1.2.0-1build3"},{"binary_name":"gss-ntlmssp-dbgsym","binary_version":"1.2.0-1build3"},{"binary_name":"gss-ntlmssp-dev","binary_version":"1.2.0-1build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-25566.json"}},{"package":{"name":"gss-ntlmssp","ecosystem":"Ubuntu:25.04","purl":"pkg:deb/ubuntu/gss-ntlmssp@1.2.0-1build3?arch=source&distro=plucky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-1build3"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gss-ntlmssp","binary_version":"1.2.0-1build3"},{"binary_name":"gss-ntlmssp-dbgsym","binary_version":"1.2.0-1build3"},{"binary_name":"gss-ntlmssp-dev","binary_version":"1.2.0-1build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-25566.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}