MGASA-2019-0087 - Updated lxc packages fix security vulnerability

Publication date: 17 Feb 2019
URL: https://advisories.mageia.org/MGASA-2019-0087.html
Type: security
Affected Mageia releases: 6
CVE: CVE-2019-5736

LXC allows attackers to overwrite the host LXC binary (and consequently
obtain host root access) by leveraging the ability to execute a command as
root within one of these types of containers: a new container with an
attacker-controlled image, or an existing container, to which the attacker
previously had write access. This occurs because of file-descriptor
mishandling, related to /proc/self/exe. This attack is only possible with
privileged containers since it requires root privilege on the host to
overwrite the binary.

References:
- https://bugs.mageia.org/show_bug.cgi?id=24350
- https://www.openwall.com/lists/oss-security/2019/02/11/2
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5736

SRPMS:
- 6/core/lxc-2.0.8-1.1.mga6

Mageia 2019-0087: lxc security update

LXC allows attackers to overwrite the host LXC binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of...

Summary

LXC allows attackers to overwrite the host LXC binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: a new container with an attacker-controlled image, or an existing container, to which the attacker previously had write access. This occurs because of file-descriptor mishandling, related to /proc/self/exe. This attack is only possible with privileged containers since it requires root privilege on the host to overwrite the binary.

References

- https://bugs.mageia.org/show_bug.cgi?id=24350

- https://www.openwall.com/lists/oss-security/2019/02/11/2

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5736

Resolution

MGASA-2019-0087 - Updated lxc packages fix security vulnerability

SRPMS

- 6/core/lxc-2.0.8-1.1.mga6

Severity
Publication date: 17 Feb 2019
URL: https://advisories.mageia.org/MGASA-2019-0087.html
Type: security
CVE: CVE-2019-5736

Related News

4.Lock AbstractDigital Esm H320
2 - 3 min read
Tails 6.2 is a new Linux distribution release that expands its multilingual support and improves security features. The distribution is a
19.Laptop Bed Esm H320
2 - 3 min read
AlmaLinux 9.4 beta has been released and provides compelling reasons to consider it for desktop usage. While AlmaLinux is primarily known as a
32.Lock Code Circular Esm H320
2 - 3 min read
Linux admins and security practitioners face significant challenges in keeping their Linux systems secure amidst the constant threat of kernel bugs.
1.Penguin Landscape Esm H320
2 - 3 min read
A significant security threat, known as the Spectre v2 exploit, has been observed targeting Linux systems running on modern Intel processors. Let's
10.FingerPrint Locks Esm H320
2 - 3 min read
The recent release of I2P 2.5.0 , an anonymous P2P network that protects against online censorship, surveillance, and monitoring, has brought a slew
24.Key Code Esm H320
2 - 3 min read
The Akira ransomware group has extorted approximately $42 million from over 250 victims since January 1, 2024. The group initially focused on
5.ShakingHands Esm H320
2 - 3 min read
At The Linux Foundation's Open Source Summit North America , Linus Torvalds, the creator of Linux, discussed various topics related to Linux
30.Lock Globe Motherboard Esm H320
1 - 2 min read
The SPDX 3.0 release marks a significant milestone in software management, particularly for Linux admins, infosec professionals, internet security
Sign Up

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