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.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=565997 | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052936.html | vendor advisory |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052935.html | vendor advisory |
| http://www.securityfocus.com/bid/43592 | vdb entry |
| http://secunia.com/advisories/42868 | third party advisory vendor advisory |
| http://www.vupen.com/english/advisories/2011/0058 | vdb entry vendor advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/64619 | vdb entry |
| http://sourceforge.net/tracker/?func=detail&aid=2676136&group_id=158366&atid=807545 | patch |