Arch Linux Security Advisory ASA-202002-12
=========================================
Severity: Critical
Date    : 2020-02-25
CVE-ID  : CVE-2020-8955 CVE-2020-9759 CVE-2020-9760
Package : weechat
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1103

Summary
======
The package weechat before version 2.7.1-1 is vulnerable to multiple
issues including arbitrary code execution and denial of service.

Resolution
=========
Upgrade to 2.7.1-1.

# pacman -Syu "weechat>=2.7.1-1"

The problems have been fixed upstream in version 2.7.1.

Workaround
=========
None.

Description
==========
- CVE-2020-8955 (arbitrary code execution)

A heap-based out-of-bounds write has been found in the IRC plugin of
Weechat before 2.7.1, in irc-mode.c, when receiving a malformed IRC
message 324 (channel mode).

- CVE-2020-9759 (denial of service)

A heap-based out-of-bounds read has been found in Weechat before 2.7.1,
when receiving a malformed IRC message 352 (WHO). It could lead to a
off-by-one read resulting in denial of service (crash).

- CVE-2020-9760 (arbitrary code execution)

A heap-based out-of-bounds write has been found in Weechat before
2.7.1, when a new IRC message 005 is received with longer nick
prefixes. It could lead to writing out of the allocated prefixes array
when setting a prefix, resulting in denial of service (crash) or even
arbitrary code execution.

Impact
=====
A remote attacker can crash the client and execute code remotely via a
malformed message.

References
=========
https://weechat.org/news/113/20200220-Version-2.7.1-security-release/
https://github.com/weechat/weechat/commit/51a739df615f8ec66fbe1e9682ec3c3218254ad7
https://github.com/weechat/weechat/commit/c827d6fa864e2c0b79cea640c45272e83703081e
https://github.com/weechat/weechat/commit/694b5c9f874d7337cd2e03761e0de435275dd64d
https://security.archlinux.org/CVE-2020-8955
https://security.archlinux.org/CVE-2020-9759
https://security.archlinux.org/CVE-2020-9760

ArchLinux: 202002-12: weechat: multiple issues

March 5, 2020

Summary

- CVE-2020-8955 (arbitrary code execution) A heap-based out-of-bounds write has been found in the IRC plugin of Weechat before 2.7.1, in irc-mode.c, when receiving a malformed IRC message 324 (channel mode).
- CVE-2020-9759 (denial of service)
A heap-based out-of-bounds read has been found in Weechat before 2.7.1, when receiving a malformed IRC message 352 (WHO). It could lead to a off-by-one read resulting in denial of service (crash).
- CVE-2020-9760 (arbitrary code execution)
A heap-based out-of-bounds write has been found in Weechat before 2.7.1, when a new IRC message 005 is received with longer nick prefixes. It could lead to writing out of the allocated prefixes array when setting a prefix, resulting in denial of service (crash) or even arbitrary code execution.

Resolution

Upgrade to 2.7.1-1. # pacman -Syu "weechat>=2.7.1-1"
The problems have been fixed upstream in version 2.7.1.

References

https://weechat.org/news/113/20200220-Version-2.7.1-security-release/ https://github.com/weechat/weechat/commit/51a739df615f8ec66fbe1e9682ec3c3218254ad7 https://github.com/weechat/weechat/commit/c827d6fa864e2c0b79cea640c45272e83703081e https://github.com/weechat/weechat/commit/694b5c9f874d7337cd2e03761e0de435275dd64d https://security.archlinux.org/CVE-2020-8955 https://security.archlinux.org/CVE-2020-9759 https://security.archlinux.org/CVE-2020-9760

Severity
Package : weechat
Type : multiple issues
Remote : Yes
Link : https://security.archlinux.org/AVG-1103

Workaround

None.

Related News

23.Tablet Connections Esm H320
2 - 3 min read
The release of Ubuntu 24.04 LTS , also known as Noble Numbat, brings various security enhancements and exciting new features . These improvements
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
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