xorg-x11-server before 1.19.5 was missing length validation in XFIXES extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-12183 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
CVSS3 Base Score | 7.5 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Attack Vector | Adjacent Network |
Attack Complexity | High |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity Impact | High |
Availability Impact | High |
Platform | Package | State |
---|---|---|
Red Hat Enterprise Linux 7 | xorg-x11-server | Will not fix |
Red Hat Enterprise Linux 6 | xorg-x11-server | Will not fix |
Red Hat Enterprise Linux 5 | xorg-x11-server | Will not fix |