A use-after-free vulnerability can occur in the compositor during certain graphics operations when a raw pointer is used instead of a reference counted one. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR < 52.7.3 and Firefox < 59.0.2.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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://access.redhat.com/errata/RHSA-2018:1098 | third party advisory vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1440717 | third party advisory issue tracking permissions required |
| https://usn.ubuntu.com/3609-1/ | third party advisory vendor advisory |
| https://www.debian.org/security/2018/dsa-4153 | third party advisory vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2018-10/ | vendor advisory |
| http://www.securitytracker.com/id/1040574 | third party advisory vdb entry |
| https://lists.debian.org/debian-lts-announce/2018/03/msg00023.html | third party advisory mailing list |
| http://www.securityfocus.com/bid/103506 | third party advisory vdb entry |
| https://access.redhat.com/errata/RHSA-2018:1099 | third party advisory vendor advisory |