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AUSCERT External Security Bulletin Redistribution
ESB-2019.0297
Avahi vulnerabilities
1 February 2019
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AusCERT Security Bulletin Summary
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Product: avahi
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1000845 CVE-2017-6519
Reference: ESB-2019.0243
Original Bulletin:
http://www.ubuntu.com/usn/usn-3876-1
http://www.ubuntu.com/usn/usn-3876-2
Comment: This bulletin contains two (2) Ubuntu security advisories.
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USN-3876-1: Avahi vulnerabilities
31 January 2019
avahi vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 18.10
Ubuntu 18.04 LTS
Ubuntu 16.04 LTS
Ubuntu 14.04 LTS
Summary
Several security issues were fixed in Avahi.
Software Description
avahi - Avahi IPv4LL network address configuration daemon
Details
Chad Seaman discovered that Avahi incorrectly handled certain messages. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2017-6519, CVE-2018-1000845)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.10
avahi-daemon - 0.7-4ubuntu2.1
libavahi-core7 - 0.7-4ubuntu2.1
Ubuntu 18.04 LTS
avahi-daemon - 0.7-3.1ubuntu1.2
libavahi-core7 - 0.7-3.1ubuntu1.2
Ubuntu 16.04 LTS
avahi-daemon - 0.6.32~rc+dfsg-1ubuntu2.3
libavahi-core7 - 0.6.32~rc+dfsg-1ubuntu2.3
Ubuntu 14.04 LTS
avahi-daemon - 0.6.31-4ubuntu1.3
libavahi-core7 - 0.6.31-4ubuntu1.3
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
CVE-2017-6519
CVE-2018-1000845
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USN-3876-2: Avahi vulnerabilities
31 January 2019
avahi vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 12.04 ESM
Summary
Several security issues were fixed in Avahi.
Software Description
avahi - Avahi IPv4LL network address configuration daemon
Details
USN-3876-1 fixed a vulnerability in Avahi. This update provides the
corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Chad Seaman discovered that Avahi incorrectly handled certain messages. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2017-6519, CVE-2018-1000845)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 12.04 ESM
avahi-daemon - 0.6.30-5ubuntu2.3
libavahi-core7 - 0.6.30-5ubuntu2.3
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
USN-3876-1
CVE-2017-6519
CVE-2018-1000845
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