Use-after-free vulnerability in the mozilla::nsTextNodeDirectionalityMap::RemoveElementFromMap function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code via bidirectional text.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1289970 | issue tracking vdb entry third party advisory |
| http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html | |
| http://www.mozilla.org/security/announce/2016/mfsa2016-85.html | release notes vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2016-86/ | |
| http://www.debian.org/security/2016/dsa-3674 | vendor advisory |
| https://security.gentoo.org/glsa/201701-15 | vendor advisory |
| http://rhn.redhat.com/errata/RHSA-2016-1912.html | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2016-88/ | |
| http://www.securityfocus.com/bid/93049 | vdb entry |
| http://www.securitytracker.com/id/1036852 | vdb entry |