TITLE:
Sudo Python Environment Cleaning Privilege Escalation Vulnerability

SECUNIA ADVISORY ID:
SA18358

VERIFY ADVISORY:
http://secunia.com/advisories/18358/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Sudo 1.x
http://secunia.com/product/3929/

DESCRIPTION:
Tavis Ormandy has reported a vulnerability in Sudo, which can be
exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to an error within the environment
cleaning. This can be exploited by a user with sudo access to a
python script to gain access to an interactive python prompt via the
"PYTHONINSPECT" environment variable.

The vulnerability is related to:
SA17318

SOLUTION:
Clean untrusted environment variables using the "env_reset" or
"env_delete" directive in the sudoer's file.

PROVIDED AND/OR DISCOVERED BY:
Tavis Ormandy

ORIGINAL ADVISORY:
http://www.ubuntulinux.org/usn/usn-235-2

OTHER REFERENCES:
SA17318:
http://secunia.com/advisories/17318/

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