CVE-2012-1176: Buffer Overflow
First published: Fri Mar 09 2012(Updated: )
A buffer overflow flaw was reported [1].[2] in pyfribidi's fribidi_utf8_to_unicode() function, due to it handling at most 3 bytes for a single unicode character. If a 4-byte utf-8 sequence was supplied, it would generate 2 unicode characters which would overflow the logical buffer. This has been fixed in pyfribidi 0.11 [3]. [1] <a href="http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=663189">http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=663189</a> [2] <a href="https://github.com/pediapress/pyfribidi/issues/2">https://github.com/pediapress/pyfribidi/issues/2</a> [3] <a href="https://github.com/pediapress/pyfribidi/commit/d2860c655357975e7b32d84e6b45e98f0dcecd7a">https://github.com/pediapress/pyfribidi/commit/d2860c655357975e7b32d84e6b45e98f0dcecd7a</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fribidi Pyfribidi | <=0.10.9 | |
| pip/pyfribidi | <0.11.0 | 0.11.0 |
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Reference Links
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=663189
- http://groups.google.com/group/linux.debian.bugs.dist/browse_thread/thread/aacd036037217998/8d095f85f3665bff?lnk=raot
- http://lists.fedoraproject.org/pipermail/package-announce/2012-March/075293.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-March/076038.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-March/076053.html
- http://www.openwall.com/lists/oss-security/2012/03/14/4
- http://www.openwall.com/lists/oss-security/2012/03/14/9
- http://www.securityfocus.com/bid/52451
- https://bugzilla.redhat.com/show_bug.cgi?id=801896
- https://bugzilla.wikimedia.org/show_bug.cgi?id=35055
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74001
- https://github.com/pediapress/pyfribidi/commit/d2860c655357975e7b32d84e6b45e98f0dcecd7a
- https://github.com/pediapress/pyfribidi/issues/2%29:
- https://github.com/pediapress/pyfribidi/issues/2
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=801897
- https://nvd.nist.gov/vuln/detail/CVE-2012-1176
- https://web.archive.org/web/20200228170815/http://www.securityfocus.com/bid/52451
- https://github.com/advisories/GHSA-6476-g47x-h3c7 (Advisory)
- https://github.com/pypa/advisory-database/tree/main/vulns/pyfribidi/PYSEC-2012-11.yaml
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