Mandriva Linux Security Advisory : sudo (MDVSA-2011:018)
Medium Nessus Plugin ID 51809
SynopsisThe remote Mandriva Linux host is missing a security update.
DescriptionMultiple vulnerabilities has been found and corrected in sudo :
A a patch for parse.c in sudo does not properly interpret a system group (aka %group) in the sudoers file during authorization decisions for a user who belongs to that group, which allows local users to leverage an applicable sudoers file and gain root privileges via a sudo command. NOTE: this vulnerability exists because of a CVE-2009-0034 regression (CVE-2011-0008).
check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command (CVE-2011-0010).
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The updated packages have been upgraded to the latest versions (1.7.4p6) which is not affected by these issues.
SolutionUpdate the affected sudo package.