Alerts This Week
Warning Icon 1 727
Alerts This Week
Warning Icon 1 727

Mageia 8: 2023-0131 Moderate: Tigervnc Use-After-Free Security Advisory

mageia
Calendar Grey April 11, 2023
Dist Mageia Esm H88
Ubuntu releases critical patch for openssh/server to mitigate potential remote access vulnerabilities; prompt application is advised.
A flaw was found in X.Org Server Overlay Window

Summary

A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later. (CVE-2023-1393)

References

- https://bugs.mageia.org/show_bug.cgi?id=31732

- https://lists.x.org/archives/xorg-announce/2023-March/003374.html

- https://lists.debian.org/debian-security-announce/2023/msg00070.html

- https://ubuntu.com/security/notices/USN-5986-1

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/CB62PUAZRE2ZK6PDX6OZ2WSYXDJGBGTS/

- https://access.redhat.com/errata/RHSA-2023:1592

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/SW2NRC3V53PIBXFPFBVWCOM2MDDILWQS/

- https://www.cve.org/CVERecord?id=CVE-2023-1393

Topics%20covered

Topics Covered

security advisory local privilege escalation moderate severity use-after-free tigervnc Mageia X11 server

Resolution

SRPMS

- 8/core/tigervnc-1.11.0-4.3.mga8

- 8/core/x11-server-1.20.14-4.3.mga8

Severity
important
Lowest
Low
Medium
High
Critical

Publication date: 11 Apr 2023
URL: https://advisories.mageia.org/MGASA-2023-0131.html
Type: security
CVE: CVE-2023-1393

Topics%20covered

Topics Covered

security advisory local privilege escalation moderate severity use-after-free tigervnc Mageia X11 server

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here