driver/subprocs.c in XScreenSaver before 5.34 does not properly perform an internal consistency check, which allows physically proximate attackers to bypass the lock screen by hot swapping monitors.
CVSS 2.0
Severity: LOW
Problem Type: CWE-264,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| xscreensaver_project | xscreensaver | 5.33 |
| canonical | ubuntu_linux | 12.04 |
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.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 7.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | 1.8 | 5.9 |
CVSS 2.0
Severity: HIGH
Problem Type: CWE-269,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| xscreensaver_project | xscreensaver | 5.42+dfsg1-1 |
XScreenSaver 5.45 can be bypassed if the machine has more than ten disconnectable video outputs. A buffer overflow in update_screen_layout() allows an attacker to bypass the standard screen lock authentication mechanism by crashing XScreenSaver. The attacker must physically disconnect many video outputs.
CVSS 3.x
| Source | Score | Severity | Vector | Exploitability | Impact |
|---|---|---|---|---|---|
| nvd@nist.gov | 4.6 | MEDIUM | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | 0.9 | 3.6 |
CVSS 2.0
Severity: LOW
Problem Type: CWE-120,
Products Affected
| Vendor | Product | Version |
|---|---|---|
| fedoraproject | fedora | 33 |
| xscreensaver_project | xscreensaver | 5.45 |