VMware Authentication Daemon 1.0 in vmware-authd.exe in the VMware Authorization Service in VMware Workstation 7.0 before 7.0.1 build 227600 and 6.5.x before 6.5.4 build 246459, VMware Player 3.0 before 3.0.1 build 227600 and 2.5.x before 2.5.4 build 246459, VMware ACE 2.6 before 2.6.1 build 227600 and 2.5.x before 2.5.4 build 246459, and VMware Server 2.x allows remote attackers to cause a denial of service (process crash) via a x25xFF sequence in the USER and PASS commands, related to a format string DoS issue. NOTE: some of these details are obtained from third party information.
The product uses a function that accepts a format string as an argument, but the format string originates from an external source.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ace | Vmware | 2.5.0 (including) | 2.5.0 (including) |
| Ace | Vmware | 2.5.1 (including) | 2.5.1 (including) |
| Ace | Vmware | 2.5.2 (including) | 2.5.2 (including) |
| Ace | Vmware | 2.5.3 (including) | 2.5.3 (including) |
| Ace | Vmware | 2.5.4 (including) | 2.5.4 (including) |
| Ace | Vmware | 2.6 (including) | 2.6 (including) |
| Ace | Vmware | 2.6.1 (including) | 2.6.1 (including) |
| Player | Vmware | 2.5 (including) | 2.5 (including) |
| Player | Vmware | 2.5.1 (including) | 2.5.1 (including) |
| Player | Vmware | 2.5.2 (including) | 2.5.2 (including) |
| Player | Vmware | 2.5.3 (including) | 2.5.3 (including) |
| Player | Vmware | 2.5.4 (including) | 2.5.4 (including) |
| Player | Vmware | 3.0 (including) | 3.0 (including) |
| Player | Vmware | 3.0.1 (including) | 3.0.1 (including) |
| Server | Vmware | 2.0.0 (including) | 2.0.0 (including) |
| Server | Vmware | 2.0.1 (including) | 2.0.1 (including) |
| Server | Vmware | 2.0.2 (including) | 2.0.2 (including) |
| Workstation | Vmware | 6.5.0 (including) | 6.5.0 (including) |
| Workstation | Vmware | 6.5.1 (including) | 6.5.1 (including) |
| Workstation | Vmware | 6.5.2 (including) | 6.5.2 (including) |
| Workstation | Vmware | 6.5.3 (including) | 6.5.3 (including) |
| Workstation | Vmware | 6.5.4 (including) | 6.5.4 (including) |
| Workstation | Vmware | 7.0 (including) | 7.0 (including) |
| Workstation | Vmware | 7.0.1 (including) | 7.0.1 (including) |
When an attacker can modify an externally-controlled format string, this can lead to buffer overflows, denial of service, or data representation problems. It should be noted that in some circumstances, such as internationalization, the set of format strings is externally controlled by design. If the source of these format strings is trusted (e.g. only contained in library files that are only modifiable by the system administrator), then the external control might not itself pose a vulnerability.