Vulnerability Details : CVE-2020-14361
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow 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
Exploit prediction scoring system (EPSS) score for CVE-2020-14361
Probability of exploitation activity in the next 30 days: 0.05%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 19 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-14361
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
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-2020-14361
-
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2020-14361
-
https://usn.ubuntu.com/4488-2/
USN-4488-2: X.Org X Server vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
-
https://www.zerodayinitiative.com/advisories/ZDI-20-1418/
Third Party Advisory;VDB Entry
-
https://lists.x.org/archives/xorg-announce/2020-August/003058.html
X.Org server security advisory: August 25, 2020Mailing List;Patch;Vendor Advisory
-
https://security.gentoo.org/glsa/202012-01
Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1869142
1869142 – (CVE-2020-14361) CVE-2020-14361 xorg-x11-server: XkbSelectEvents Integer Underflow Privilege Escalation VulnerabilityIssue Tracking;Third Party Advisory
Products affected by CVE-2020-14361
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:x.org:xorg-server:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*