The Debian xscreensaver 5.42+dfsg1-1 package for XScreenSaver has cap_net_raw enabled for the /usr/libexec/xscreensaver/sonar file, which allows local users to gain privileges because this is arguably incompatible with the design of the Mesa 3D Graphics library dependency.
Weakness
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xscreensaver | Xscreensaver_project | 5.42+dfsg1-1 (including) | 5.42+dfsg1-1 (including) |
| Xscreensaver | Ubuntu | bionic | * |
| Xscreensaver | Ubuntu | focal | * |
| Xscreensaver | Ubuntu | groovy | * |
| Xscreensaver | Ubuntu | hirsute | * |
| Xscreensaver | Ubuntu | impish | * |
| Xscreensaver | Ubuntu | kinetic | * |
| Xscreensaver | Ubuntu | lunar | * |
| Xscreensaver | Ubuntu | mantic | * |
| Xscreensaver | Ubuntu | oracular | * |
| Xscreensaver | Ubuntu | plucky | * |
| Xscreensaver | Ubuntu | trusty | * |
| Xscreensaver | Ubuntu | xenial | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/122.html
- https://cwe.mitre.org/data/definitions/233.html
- https://cwe.mitre.org/data/definitions/58.html