Use-after-free vulnerability in the TypeObject class in the JavaScript engine in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers to execute arbitrary code by triggering extensive memory consumption while garbage collection is occurring, as demonstrated by improper handling of BumpChunk objects.
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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 28.0 (excluding) |
| Firefox_esr | Mozilla | 24.0 (including) | 24.4 (excluding) |
| Seamonkey | Mozilla | * | 2.25 (excluding) |
| Thunderbird | Mozilla | * | 24.4 (excluding) |
| Red Hat Enterprise Linux 5 | RedHat | firefox-0:24.4.0-1.el5_10 | * |
| Red Hat Enterprise Linux 5 | RedHat | thunderbird-0:24.4.0-1.el5_10 | * |
| Red Hat Enterprise Linux 6 | RedHat | firefox-0:24.4.0-1.el6_5 | * |
| Red Hat Enterprise Linux 6 | RedHat | thunderbird-0:24.4.0-1.el6_5 | * |
| Firefox | Ubuntu | devel | * |
| Firefox | Ubuntu | lucid | * |
| Firefox | Ubuntu | precise | * |
| Firefox | Ubuntu | quantal | * |
| Firefox | Ubuntu | saucy | * |
| Firefox | Ubuntu | upstream | * |
| Thunderbird | Ubuntu | devel | * |
| Thunderbird | Ubuntu | lucid | * |
| Thunderbird | Ubuntu | precise | * |
| Thunderbird | Ubuntu | quantal | * |
| Thunderbird | Ubuntu | saucy | * |
| Thunderbird | Ubuntu | upstream | * |