QID 198430

Date Published: 2021-07-12

QID 198430: Ubuntu Security Notification for Avahi vulnerabilities (USN-5008-1)

Avahi incorrectly handled termination signals on the unix socket.
Avahi incorrectly handled certain hostnames.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

a local attacker could possibly use this issue to cause avahi to hang, resulting in a denial of service.
This issue only affected ubuntu 18.04 lts, ubuntu 20.04 lts, and ubuntu 20.10. (
Cve-2021-3468).
A local attacker could possibly use this issue to cause avahi to crash, resulting in a denial of service.
This issue only affected ubuntu 20.10 and ubuntu 21.04. (
Cve-2021-3502).

  • CVSS V3 rated as Medium - 5.5 severity.
  • CVSS V2 rated as Low - 2.1 severity.
    • Solution
    Refer to Ubuntu advisory: USN-5008-1 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 198430

    CVE-2021-3502 | CVE-2021-3468 |
    Software Advisories
    Advisory ID Software Component Link
    USN-5008-1 Ubuntu Linux URL Logo usn.ubuntu.com/5008-1
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