The DEC UDK processing feature in the xterm terminal emulator in XFree86 4.2.99.4 and earlier allows attackers to cause a denial of service via a certain character escape sequence that causes the terminal to enter a tight loop.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| X11r6 | Xfree86_project | 4.0 (including) | 4.0 (including) |
| X11r6 | Xfree86_project | 4.0.1 (including) | 4.0.1 (including) |
| X11r6 | Xfree86_project | 4.0.3 (including) | 4.0.3 (including) |
| X11r6 | Xfree86_project | 4.1.0 (including) | 4.1.0 (including) |
| X11r6 | Xfree86_project | 4.2.0 (including) | 4.2.0 (including) |
| X11r6 | Xfree86_project | 4.2.1 (including) | 4.2.1 (including) |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | RedHat | * | |
| Red Hat Enterprise Linux ES version 2.1 | RedHat | * | |
| Red Hat Enterprise Linux WS version 2.1 | RedHat | * | |
| Red Hat Linux 7.1 | RedHat | * | |
| Red Hat Linux 7.2 | RedHat | * | |
| Red Hat Linux 7.3 | RedHat | * | |
| Red Hat Linux 8.0 | RedHat | * | |
| Red Hat Linux Advanced Workstation 2.1 | RedHat | * | |
| Xorg | Ubuntu | dapper | * |
| Xorg | Ubuntu | devel | * |
| Xorg | Ubuntu | edgy | * |
| Xorg | Ubuntu | feisty | * |