Secunia Security Advisory - A security issue has been reported in Sudo, which can be exploited by malicious, local users to bypass certain security restrictions.
6144a3993a8cd97e7c66f1f9d4225821d9746bd911fbdbc4d08debd611456127
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TITLE:
Sudo "secure path" Security Bypass Security Issue
SECUNIA ADVISORY ID:
SA40002
VERIFY ADVISORY:
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http://secunia.com/advisories/40002/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40002
RELEASE DATE:
2010-06-04
DISCUSS ADVISORY:
http://secunia.com/advisories/40002/#comments
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http://secunia.com/advisories/40002/
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DESCRIPTION:
A security issue has been reported in Sudo, which can be exploited by
malicious, local users to bypass certain security restrictions.
The security issue is caused due to the "secure path" feature only
verifying and restricting the first instance of the "PATH"
environment variable, which can be exploited to e.g. run restricted
applications by adding a second instance of the "PATH" environment
variable.
Successful exploitation requires that the "secure path" feature is
configured and that the attacker is allowed to run an application,
which e.g. uses the last instance of the "PATH" environment variable
and does not set "PATH" itself (e.g. GNU Bourne Again SHell).
The security issue is reported in versions 1.3.1 through 1.6.9p22 and
versions 1.7.0 through 1.7.2p6.
SOLUTION:
Update to version 1.6.9p23 and 1.7.2p7.
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Evan Broder and Anders Kaseorg of Ksplice, Inc.
ORIGINAL ADVISORY:
http://www.sudo.ws/sudo/alerts/secure_path.html
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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