Buffer overflow in the log2vis_utf8 function in pyfribidi.c in GNU FriBidi 0.19.1, 0.19.2, and possibly other versions, as used in PyFriBidi 0.10.1, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted Arabic UTF-8 string that causes original 2-byte UTF-8 sequences to be transformed into 3-byte sequences.

References

• https://nvd.nist.gov/vuln/detail/CVE-2010-3444
• https://bugzilla.redhat.com/show_bug.cgi?id=565997
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64619
• http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052935.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052936.html
• http://secunia.com/advisories/42868
• http://sourceforge.net/tracker/?func=detail&aid=2676136&group_id=158366&atid=807545
• http://www.securityfocus.com/bid/43592
• http://www.vupen.com/english/advisories/2011/0058