1. Ubuntu Security Notices
  2. USN-6487-1

USN-6487-1: Avahi vulnerabilities

Publication date

20 November 2023

Overview

Avahi could be made to crash if it received specially crafted input.

Releases

Packages

  • avahi - IPv4LL network address configuration daemon

Details

Evgeny Vereshchagin discovered that Avahi contained several reachable
assertions, which could lead to intentional assertion failures when
specially crafted user input was given. An attacker could possibly use
this issue to cause a denial of service. (CVE-2023-38469, CVE-2023-38470,
CVE-2023-38471, CVE-2023-38472, CVE-2023-38473)

Evgeny Vereshchagin discovered that Avahi contained several reachable
assertions, which could lead to intentional assertion failures when
specially crafted user input was given. An attacker could possibly use
this issue to cause a denial of service. (CVE-2023-38469, CVE-2023-38470,
CVE-2023-38471, CVE-2023-38472, CVE-2023-38473)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
23.10 mantic avahi-daemon –  0.8-10ubuntu1.1
libavahi-client3 –  0.8-10ubuntu1.1
libavahi-common3 –  0.8-10ubuntu1.1
libavahi-core7 –  0.8-10ubuntu1.1
23.04 lunar avahi-daemon –  0.8-6ubuntu1.23.04.2
libavahi-client3 –  0.8-6ubuntu1.23.04.2
libavahi-common3 –  0.8-6ubuntu1.23.04.2
libavahi-core7 –  0.8-6ubuntu1.23.04.2
22.04 jammy avahi-daemon –  0.8-5ubuntu5.2
libavahi-client3 –  0.8-5ubuntu5.2
libavahi-common3 –  0.8-5ubuntu5.2
libavahi-core7 –  0.8-5ubuntu5.2
20.04 focal avahi-daemon –  0.7-4ubuntu7.3
libavahi-client3 –  0.7-4ubuntu7.3
libavahi-common3 –  0.7-4ubuntu7.3
libavahi-core7 –  0.7-4ubuntu7.3
18.04 bionic avahi-daemon –  0.7-3.1ubuntu1.3+esm2  
libavahi-client3 –  0.7-3.1ubuntu1.3+esm2  
libavahi-common3 –  0.7-3.1ubuntu1.3+esm2  
libavahi-core7 –  0.7-3.1ubuntu1.3+esm2  
16.04 xenial avahi-daemon –  0.6.32~rc+dfsg-1ubuntu2.3+esm3  
libavahi-client3 –  0.6.32~rc+dfsg-1ubuntu2.3+esm3  
libavahi-common3 –  0.6.32~rc+dfsg-1ubuntu2.3+esm3  
libavahi-core7 –  0.6.32~rc+dfsg-1ubuntu2.3+esm3  
14.04 trusty avahi-daemon –  0.6.31-4ubuntu1.3+esm3  
libavahi-client3 –  0.6.31-4ubuntu1.3+esm3  
libavahi-common3 –  0.6.31-4ubuntu1.3+esm3  
libavahi-core7 –  0.6.31-4ubuntu1.3+esm3  

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References

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