Use-after-free vulnerability in the abstract file-descriptor handling interface in the cupsdDoSelect function in scheduler/select.c in the scheduler in cupsd in CUPS before 1.4.4, when kqueue or epoll is used, allows remote attackers to cause a denial of service (daemon crash or hang) via a client disconnection during listing of a large number of print jobs, related to improperly maintaining a reference count. NOTE: some of these details are obtained from third party information. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-3553.
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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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 |
|---|---|---|---|
| Cups | Apple | * | 1.4.4 (excluding) |
| Mac_os_x | Apple | * | 10.5.8 (excluding) |
| Mac_os_x | Apple | 10.6.0 (including) | 10.6.4 (excluding) |
| Mac_os_x_server | Apple | * | 10.5.8 (excluding) |
| Mac_os_x_server | Apple | 10.6.0 (including) | 10.6.4 (excluding) |
| Red Hat Enterprise Linux 5 | RedHat | cups-1:1.3.7-11.el5_4.6 | * |
| Cups | Ubuntu | devel | * |
| Cups | Ubuntu | intrepid | * |
| Cups | Ubuntu | jaunty | * |
| Cups | Ubuntu | karmic | * |
| Cupsys | Ubuntu | hardy | * |