Home / vulnerabilities Secunia Security Advisory 42886
Posted on 13 January 2011
Source : packetstormsecurity.org Link
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TITLE:
Sudo Group Changing Vulnerability
SECUNIA ADVISORY ID:
SA42886
VERIFY ADVISORY:
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http://secunia.com/advisories/42886/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42886
RELEASE DATE:
2011-01-13
DISCUSS ADVISORY:
http://secunia.com/advisories/42886/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/42886/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42886
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DESCRIPTION:
A vulnerability has been discovered in Sudo, which can be exploited
by malicious, local users to perform certain actions with escalated
privileges.
The vulnerability is caused due to Sudo not properly restricting
changes of the group ID (GID), which can be exploited via the "sudo
-g" command to change into a restricted GID without having to enter a
password.
Note: Successful exploitation requires that Sudo is configured using
a certain syntax, e.g. "%sudo ALL=(ALL:ALL) ALL" is affected while
"%sudo ALL=(ALL) ALL" is not.
The vulnerability is confirmed in version 1.7.4-p4. Other versions
may also be affected.
SOLUTION:
Fixed in the Mercurial repository.
PROVIDED AND/OR DISCOVERED BY:
Reported in a Debian bug by Alexander Kurtz.
ORIGINAL ADVISORY:
Debian Bug #609641:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=609641
Sudo:
http://www.sudo.ws/repos/sudo/rev/fe8a94f96542
http://www.sudo.ws/repos/sudo/rev/07d1b0ce530e
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
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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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