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TITLE:
International Components for Unicode (ICU) "_canonicalize()" Buffer
Overflow Vulnerability

SECUNIA ADVISORY ID:
SA47146

VERIFY ADVISORY:
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http://secunia.com/advisories/47146/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47146

RELEASE DATE:
2011-12-14

DISCUSS ADVISORY:
http://secunia.com/advisories/47146/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/47146/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=47146

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DESCRIPTION:
A vulnerability has been reported in the International Components for
Unicode (ICU), which potentially can be exploited by malicious people
to compromise an application using the library.

The vulnerability is caused due to an error within the
"_canonicalize()" function (source/common/uloc.c) and can be
exploited to cause a stack-based buffer overflow via specially
crafted locale IDs.

The vulnerability is reported in icu4c 4.8.1.1 (C/C++ version). Other
versions may be also affected.

SOLUTION:
There's currently no known effective workaround.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Chromium bug report.

ORIGINAL ADVISORY:
ICU bug #8984:
http://bugs.icu-project.org/trac/ticket/8984

Chromium bug #106441:
http://code.google.com/p/chromium/issues/detail?id=106441

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
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EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
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EXPLOIT:
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http://secunia.com/vulnerability_intelligence/

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