Home / vulnerabilities Secunia Security Advisory 43596
Posted on 16 March 2011
Source : packetstormsecurity.org Link
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TITLE:
util-linux mount RLIMIT_FSIZE Security Issue
SECUNIA ADVISORY ID:
SA43596
VERIFY ADVISORY:
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http://secunia.com/advisories/43596/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=43596
RELEASE DATE:
2011-03-16
DISCUSS ADVISORY:
http://secunia.com/advisories/43596/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/43596/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=43596
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A security issue has been reported in util-linux, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).
The security is caused due to the "mount" utility not properly
handling the SIGXFSZ signal when e.g. adding new file system
descriptions to "/etc/mtab", which can be exploited to e.g. corrupt
the "/etc/mtab" file or leave a stale "/etc/mtab~" file by setting a
low RLIMIT_FSIZE limit.
SOLUTION:
Restrict access to trusted users only.
PROVIDED AND/OR DISCOVERED BY:
Dan Rosenberg
ORIGINAL ADVISORY:
http://www.openwall.com/lists/oss-security/2011/03/04/9
http://www.openwall.com/lists/oss-security/2011/03/15/6
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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