pam_sm_authenticate in pam_pgsql.c in libpam-pgsql 0.6.3 does not properly consider operator precedence when evaluating the success of a…

Description

pam_sm_authenticate in pam_pgsql.c in libpam-pgsql 0.6.3 does not properly consider operator precedence when evaluating the success of a pam_get_pass function call, which allows local users to gain privileges via a SIGINT signal when this function is executing, as demonstrated by a CTRL-C sequence at a sudo password prompt in an "auth sufficient pam_pgsql.so" configuration.

Scores

EPSS (exploitation in 30 days)

0.32% · top 74% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.

Weakness

• n/a
• CWE-287 (opens in a new tab)All about CWE-287 and its CVEs

Affected products

• n/a

  • affected n/a

References (7)

• 30391 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2008-1654 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=481970 (opens in a new tab)x_refsource_CONFIRMx_transferred
• libpampgsql-pamsm-security-bypass(42653) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• http://sourceforge.net/project/shownotes.php?release_id=601775 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 1020111 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• 29360 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2008-2516](https://trackcve.app/badge/CVE-2008-2516.svg)](https://trackcve.app/cve/CVE-2008-2516)

Record last updated 7 Aug 2024, 09:05 UTC.