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Fencer Vulns
low 2.1

CVE-2005-2977 json

The SELinux version of PAM before 0.78 r3 allows local users to perform brute force password guessing attacks via unix_chkpwd, which does n…

published 2005-11-01 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-2977

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

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.

Patch / fix

  • pam Debian 14, Debian 13, Debian 12 0.99.7.1-2

debian advisories DEBIAN-CVE-2005-2977

  • pam RHEL 4 0.77-66.13

red hat advisories RHSA-2005:805

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2005-2977 updated

security flaw

  • Red Hat Enterprise Linux AS version 4 pam 0.77-66.13 Red Hat Enterprise Linux Desktop version 4 pam 0.77-66.13 Red Hat Enterprise Linux ES version 4 pam 0.77-66.13 Red Hat Enterprise Linux WS version 4 pam 0.77-66.13
    fixed: vendor fix RHSA-2005:805

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.