Vulnerability Details : CVE-2020-14345
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Out-Of-Bounds access in XkbSetNames function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Vulnerability category: OverflowGain privilege
Products affected by CVE-2020-14345
- cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-14345
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 18 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-14345
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
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-2020-14345
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2020-14345
-
https://usn.ubuntu.com/4488-2/
USN-4488-2: X.Org X Server vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://usn.ubuntu.com/4490-1/
USN-4490-1: X.Org X Server vulnerability | Ubuntu security notices | UbuntuThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/01/15/1
oss-security - Re: [vs] Cinnamon lock screen bypass in multiple distributionsMailing List;Third Party Advisory
-
https://lists.x.org/archives/xorg-announce/2020-August/003058.html
X.Org server security advisory: August 25, 2020Vendor Advisory
-
https://security.gentoo.org/glsa/202012-01
Third Party Advisory
-
https://www.zerodayinitiative.com/advisories/ZDI-20-1416/
Third Party Advisory;VDB Entry
-
https://bugzilla.redhat.com/show_bug.cgi?id=1862241
1862241 – (CVE-2020-14345) CVE-2020-14345 xorg-x11-server: Out-Of-Bounds access in XkbSetNames functionIssue Tracking;Third Party Advisory
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