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[ GLSA 201203-06 ] sudo: Privilege escalation
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PostPosted: Tue Mar 06, 2012 6:26 am    Post subject: [ GLSA 201203-06 ] sudo: Privilege escalation Reply with quote

Gentoo Linux Security Advisory

Title: sudo: Privilege escalation (GLSA 201203-06)
Severity: high
Exploitable: local
Date: March 06, 2012
Bug(s): #351490, #401533
ID: 201203-06

Synopsis

Two vulnerabilities have been discovered in sudo, allowing local
attackers to possibly gain escalated privileges.


Background

sudo allows a system administrator to give users the ability to run
commands as other users.


Affected Packages

Package: app-admin/sudo
Vulnerable: < 1.8.3_p2
Unaffected: >= 1.8.3_p2
Unaffected: >= 1.7.4_p5 < 1.7.5
Architectures: All supported architectures


Description

Two vulnerabilities have been discovered in sudo:
  • When the sudoers file is configured with a Runas group, sudo does not
    prompt for a password when changing to the new group (CVE-2011-0010).
  • A format string vulnerability exists in the "sudo_debug()" function
    (CVE-2012-0809).


Impact

A local attacker could possibly gain the ability to run arbitrary
commands with the privileges of other users or groups, including root.


Workaround

There is no known workaround at this time.

Resolution

All sudo users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.3_p2"
   


References

CVE-2011-0010
CVE-2012-0809
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