Ubuntu pam-xdg-support module privilege escalation

ubuntu-cve20131052-priv-esc (82918) The risk level is classified as HighHigh Risk


The Ubuntu pam-xdg-support module could allow a local attacker to gain elevated privileges on the system, caused by the improper handling of the PATH environment variable. An attacker could exploit this vulnerability to execute arbitrary code with elevated privileges.


Base Score: 4.6
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
Temporal Score: 3.4
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed


Gain Privileges


Refer to USN-1766-1 for patch, upgrade or suggested workaround information. See References.


  • USN-1766-1: pam-xdg-support vulnerability.
  • BID-58550: Ubuntu 'pam-xdg-support' Module CVE-2013-1052 Local Privilege Escalation Vulnerability
  • CVE-2013-1052: pam-xdg-support, as used in Ubuntu 12.10, does not properly handle the PATH environment variable, which allows local users to gain privileges via unspecified vectors related to sudo.

Platforms Affected:

  • Canonical Ubuntu 12.10


Mar 18, 2013

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