In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-13721 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 | 3.6 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L |
Attack Vector | Local |
Attack Complexity | High |
Privileges Required | Low |
User Interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity Impact | Low |
Availability Impact | Low |
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 |