72796 : GNU C Library (glibc) fnmatch() Function UTF-8 String Handling Integer Overflow DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
6	825	about 2 years ago	about 1 month ago	30 times	100%

Timeline

Disclosure Date
2011-02-24

Time to Patch	Time to Vendor Response
4 days	4 days

Description

GNU C Library (glibc) contains an integer overflow condition in the 'fnmatch' function [posix/fnmatch.c] that is triggered as user-supplied UTF-8 strings are not properly validated. With a specially crafted string, a remote attacker can cause an out-of-bounds read access violation, crashing an application linked against the library.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Availability
Solution: Upgrade
Exploit: Exploit Public
Disclosure: Vendor Verified

Solution

Upgrade to version 2.12.2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

GNU

GNU C Library (glibc)

2.12.1

References

CVE ID: 2011-1659 (see also: NVD)
Secunia Advisory ID: 44353 46397 47970 48383 53166
ISS X-Force ID: 66819
Vendor Specific News/Changelog Entry: http://code.google.com/p/chromium/issues/detail?id=48733
http://sourceware.org/bugzilla/show_bug.cgi?id=12583
https://access.redhat.com/security/cve/CVE-2011-1659
https://bugzilla.redhat.com/show_bug.cgi?id=681054
Other Advisory URL: http://scarybeastsecurity.blogspot.com/2011/02/i-got-accidental-code-execution-via.html
http://www.mandriva.com/security/advisories?name=MDVSA-2011:178
http://www.mandriva.com/security/advisories?name=MDVSA-2011:179
http://www.ubuntu.com/usn/usn-1396-1/
http://www.vmware.com/security/advisories/VMSA-2011-0012.html
Mail List Post: http://seclists.org/fulldisclosure/2011/Feb/635
Vendor Specific Solution URL: http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=8126d90480fa3e0c5c5cd0d02cb1c93174b45485
Vendor URL: http://www.gnu.org/software/libc/
Vendor Specific Advisory URL: https://downloads.avaya.com/css/P8/documents/100160531
RedHat RHSA: RHSA-2011-0412 RHSA-2011-0413 RHSA-2012-0125

Credit

Not Available

CVSSv2 Score

CVSSv2 Base Score = 5.1
Source: nvd.nist.gov | Generated: 2011-04-08 | Disagree? | There are 1 more: View All

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