Vulnerability Details : CVE-2021-31523
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.
Exploit prediction scoring system (EPSS) score for CVE-2021-31523
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-31523
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST |
|
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
|
NIST |
CWE ids for CVE-2021-31523
-
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31523
-
http://www.openwall.com/lists/oss-security/2021/04/21/3
oss-security - Re: xscreensaver package caps gets raw socketMailing List;Patch;Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/04/17/1
oss-security - xscreensaver package caps gets raw socketMailing List;Patch;Third Party Advisory
Products affected by CVE-2021-31523
- cpe:2.3:a:xscreensaver_project:xscreensaver:5.42\+dfsg1-1:*:*:*:*:*:*:*