The (1) SProcRecordCreateContext and (2) SProcRecordRegisterClients functions in the Record extension and the (3) SProcSecurityGenerateAuthorization function in the Security extension in the X server 1.4 in X.Org X11R7.3 allow context-dependent attackers to execute arbitrary code via requests with crafted length values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| X11 | X | r7.3 (including) | r7.3 (including) |
| Red Hat Enterprise Linux 2.1 | RedHat | XFree86-0:4.1.0-88.EL | * |
| Red Hat Enterprise Linux 3 | RedHat | XFree86-0:4.3.0-128.EL | * |
| Red Hat Enterprise Linux 4 | RedHat | xorg-x11-0:6.8.2-1.EL.33.0.4 | * |
| Red Hat Enterprise Linux 5 | RedHat | xorg-x11-server-0:1.1.1-48.41.el5_2.1 | * |
| Xorg-server | Ubuntu | dapper | * |
| Xorg-server | Ubuntu | devel | * |
| Xorg-server | Ubuntu | feisty | * |
| Xorg-server | Ubuntu | gutsy | * |
| Xorg-server | Ubuntu | hardy | * |
| Xorg-server | Ubuntu | upstream | * |