MGASA-2020-0388 - Updated tigervnc packages fix a security vulnerability

Publication date: 20 Oct 2020
URL: https://advisories.mageia.org/MGASA-2020-0388.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2020-26117

In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0,
viewers mishandle TLS certificate exceptions. They store the certificates as
authorities, meaning that the owner of a certificate could impersonate any
server after a client had added an exception. (CVE-2020-26117)

References:
- https://bugs.mageia.org/show_bug.cgi?id=27270
- https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/XJC7PGEFEUUZTWSX7CGQG5YLB3NCQ6BO/
- https://www.debian.org/lts/security/2020/dla-2396
- - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26117

SRPMS:
- 7/core/tigervnc-1.10.1-1.2.mga7

Mageia 2020-0388: tigervnc security update

In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions

Summary

In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception. (CVE-2020-26117)

References

- https://bugs.mageia.org/show_bug.cgi?id=27270

- https://github.com/TigerVNC/tigervnc/releases/tag/v1.11.0

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/XJC7PGEFEUUZTWSX7CGQG5YLB3NCQ6BO/

- https://www.debian.org/lts/security/2020/dla-2396

- - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26117

Resolution

MGASA-2020-0388 - Updated tigervnc packages fix a security vulnerability

SRPMS

- 7/core/tigervnc-1.10.1-1.2.mga7

Severity
Publication date: 20 Oct 2020
URL: https://advisories.mageia.org/MGASA-2020-0388.html
Type: security
CVE: CVE-2020-26117

Related News

The End of the Road for Linux 6.11: A Call to Upgrade to Kernel 6.12
3 - 5 min read
The Linux kernel community recently issued an EOL announcement regarding the 6.11 kernel series, urging sysadmins to upgrade quickly to 6.12 . This
A Linux Admin
3 - 6 min read
As 2025 approaches, we Linux admins are facing new and often unseen cloud-native security obstacles. While skilled at mitigating known risks,
Leveraging Insights from the Linux Foundation
3 - 5 min read
The Linux Foundation's recent Census III report provides critical insights for Linux administrators, information security professionals, and anyone
Chrome 131 Released: Emergency Security Update Fixes Over a Dozen Significant Vulns
3 - 6 min read
Google recently unveiled a critical security update to their popular web browser, Google Chrome, addressing over a dozen significant security
From Wayland Fixes to Security Boosts: Examining Qt 6.8.1
3 - 6 min read
The recent Qt 6.8.1 release brings significant updates and improvements, strengthening its reputation as a secure and reliable application
Exploring Arch Linux 2024.12.01: Security Implications & Notable Enhancements for Linux Admins
3 - 6 min read
The Arch Linux 2024.12.01 ISO release marks an impressive milestone, offering cutting-edge updates that enhance functionality, streamline
Deck the Halls with Enhanced Security: Linux Kernel 6.13
3 - 5 min read
As Linux admins and infosec professionals prepare for the holiday season, there's much cause for celebration this year! Linus Torvalds recently made
Lessons from Bootkitty: Securing Linux Systems Against UEFI Intrusions
3 - 5 min read
New Linux security threats mark critical junctures that challenge existing policies and test security protocols to their limit. One such milestone

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved