The SELinux version of PAM before 0.78 r3 allows local users to perform brute force…
Priority LOW 12Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The SELinux version of PAM before 0.78 r3 allows local users to perform brute force password guessing attacks via unix_chkpwd, which does not log failed guesses or delay its responses.
Why it matters now
EPSS 0.00428 37th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2005:805 Released 2005-10-26 · Red Hat rating Lowpam security update
- Red Hat Enterprise Linux AS version 4 pam-0.77-66.13, pam-0.77-66.13.i386, pam-0.77-66.13.ia64 +5
- Red Hat Enterprise Linux Desktop version 4 pam-0.77-66.13, pam-0.77-66.13.i386, pam-devel-0.77-66.13 +1
- Red Hat Enterprise Linux ES version 4 pam-0.77-66.13, pam-0.77-66.13.i386, pam-0.77-66.13.ia64 +3
- Red Hat Enterprise Linux WS version 4 pam-0.77-66.13, pam-0.77-66.13.i386, pam-0.77-66.13.ia64 +3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2005:805 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2005:805 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2005:805 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2005:805 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-2977
- 2026-10-03 Alias added: GHSA-9fch-jjp9-h24r
References
More Pam vulnerabilities
- TI-2002-01183 PAM 0.76 treats a disabled password as if it were an empty (null) password, which allows… CVSS 2.0HIGH 7.5
- TI-1999-00337 Linux PAM modules allow local users to gain root access using temporary files. CVSS 2.0MEDIUM 6.2
Sources
- CVE-2005-2977 · CVE Program
- CVE-2005-2977 · NVD
- FIRST EPSS
- GHSA-9fch-jjp9-h24r · GitHub Advisory Database · CC BY 4.0
- CVE-2005-2977 · Red Hat security data · CC BY 4.0
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