Secunia Security Advisory - joernchen has discovered a vulnerability in sudo, which can be exploited by malicious, local users to gain escalated privileges.
bd27024795e63bb233a015aa4848c7176e5fc04391a91f1840358494dfc353cd
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TITLE:
sudo "sudo_debug()" Format String Privilege Escalation Vulnerability
SECUNIA ADVISORY ID:
SA47743
VERIFY ADVISORY:
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http://secunia.com/advisories/47743/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=47743
RELEASE DATE:
2012-01-31
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http://secunia.com/advisories/47743/#comments
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http://secunia.com/advisories/47743/
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DESCRIPTION:
joernchen has discovered a vulnerability in sudo, which can be
exploited by malicious, local users to gain escalated privileges.
The vulnerability is caused due to a format string error within the
"sudo_debug()" function (src/sudo.c) when processing the program's
name. This can be exploited by e.g. symlinking the sudo binary to a
file with a specially crafted filename containing format specifiers
and then executing the maliciously named symlink.
The vulnerability is confirmed in version 1.8.3p1 and reported in
versions 1.8.0 through 1.8.3p1.
SOLUTION:
Update to version 1.8.3p2.
PROVIDED AND/OR DISCOVERED BY:
joernchen
ORIGINAL ADVISORY:
sudo:
http://www.sudo.ws/sudo/alerts/sudo_debug.html
joernchen:
http://seclists.org/fulldisclosure/2012/Jan/att-590/advisory_sudo.txt
OTHER REFERENCES:
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EXPLOIT:
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