- Vulnerability/
- USN-3876-1
31/1/2019
USN-3876-1: Avahi vulnerabilities
First published: Thu Jan 31 2019(Updated: )
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)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/avahi-daemon | <0.7-4ubuntu2.1 | 0.7-4ubuntu2.1 |
| Ubuntu OpenSSH Client | =18.10 | |
| All of | ||
| ubuntu/libavahi-core7 | <0.7-4ubuntu2.1 | 0.7-4ubuntu2.1 |
| Ubuntu OpenSSH Client | =18.10 | |
| All of | ||
| ubuntu/avahi-daemon | <0.7-3.1ubuntu1.2 | 0.7-3.1ubuntu1.2 |
| Ubuntu OpenSSH Client | =18.04 | |
| All of | ||
| ubuntu/libavahi-core7 | <0.7-3.1ubuntu1.2 | 0.7-3.1ubuntu1.2 |
| Ubuntu OpenSSH Client | =18.04 | |
| All of | ||
| ubuntu/avahi-daemon | <0.6.32~rc+dfsg-1ubuntu2.3 | 0.6.32~rc+dfsg-1ubuntu2.3 |
| Ubuntu OpenSSH Client | =16.04 | |
| All of | ||
| ubuntu/libavahi-core7 | <0.6.32~rc+dfsg-1ubuntu2.3 | 0.6.32~rc+dfsg-1ubuntu2.3 |
| Ubuntu OpenSSH Client | =16.04 | |
| All of | ||
| ubuntu/avahi-daemon | <0.6.31-4ubuntu1.3 | 0.6.31-4ubuntu1.3 |
| Ubuntu OpenSSH Client | =14.04 | |
| All of | ||
| ubuntu/libavahi-core7 | <0.6.31-4ubuntu1.3 | 0.6.31-4ubuntu1.3 |
| Ubuntu OpenSSH Client | =14.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2017-6519
- https://ubuntu.com/security/CVE-2018-1000845
- https://ubuntu.com/security/notices/USN-3876-2
- https://launchpad.net/ubuntu/+source/avahi/0.7-4ubuntu2.1
- https://launchpad.net/ubuntu/+source/avahi/0.7-3.1ubuntu1.2
- https://launchpad.net/ubuntu/+source/avahi/0.6.32~rc+dfsg-1ubuntu2.3
- https://launchpad.net/ubuntu/+source/avahi/0.6.31-4ubuntu1.3
- https://ubuntu.com/security/notices/USN-3876-1 (Advisory)
Frequently Asked Questions
What is the severity of USN-3876-1?
USN-3876-1 is classified as a denial of service vulnerability.
How do I fix USN-3876-1?
To fix USN-3876-1, update the affected packages avahi-daemon or libavahi-core7 to the recommended versions based on your Ubuntu release.
Which systems are affected by USN-3876-1?
USN-3876-1 affects Ubuntu versions 14.04, 16.04, 18.04, and 18.10.
What packages are vulnerable in USN-3876-1?
The vulnerable packages in USN-3876-1 include avahi-daemon and libavahi-core7.
Who discovered the vulnerability USN-3876-1?
USN-3876-1 was discovered by Chad Seaman.
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