View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2013-4331 medium priority: Ubuntu including 1 source packages (lightdm), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): not-affected 2, released 2, DNE 1.
Light Display Manager (aka LightDM) 1.4.x before 1.4.3, 1.6.x before 1.6.2, and 1.7.x before 1.7.14 uses 0664 permissions for the temporary .Xauthority file, which allows local users to obtain sensitive information by reading the file.