RHEL 4 : pam (RHSA-2005:805)

Low Nessus Plugin ID 20107


The remote Red Hat host is missing one or more security updates.


An updated pam package that fixes a security weakness is now available for Red Hat Enterprise Linux 4.

This update has been rated as having low security impact by the Red Hat Security Response Team.

PAM (Pluggable Authentication Modules) is a system security tool that allows system administrators to set an authentication policy without having to recompile programs that handle authentication.

A bug was found in the way PAM's unix_chkpwd helper program validates user passwords when SELinux is enabled. Under normal circumstances, it is not possible for a local non-root user to verify the password of another local user with the unix_chkpwd command. A patch applied that adds SELinux functionality makes it possible for a local user to use brute-force password guessing techniques against other local user accounts. The Common Vulnerabilities and Exposures project has assigned the name CVE-2005-2977 to this issue.

All users of pam should upgrade to this updated package, which contains backported patches to correct these issues.


Update the affected pam and / or pam-devel packages.

See Also



Plugin Details

Severity: Low

ID: 20107

File Name: redhat-RHSA-2005-805.nasl

Version: $Revision: 1.17 $

Type: local

Agent: unix

Published: 2005/10/28

Modified: 2016/12/28

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:pam, p-cpe:/a:redhat:enterprise_linux:pam-devel, cpe:/o:redhat:enterprise_linux:4

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 2005/10/26

Vulnerability Publication Date: 2005/10/26

Reference Information

CVE: CVE-2005-2977

OSVDB: 20351

RHSA: 2005:805