CVE-2024-52615
Publication date 21 November 2024
Last updated 30 June 2025
Ubuntu priority
Description
A flaw was found in Avahi-daemon, which relies on fixed source ports for wide-area DNS queries. This issue simplifies attacks where malicious DNS responses are injected.
Read the notes from the security team
Why is this CVE low priority?
This is a low severity issue with a work-around
Mitigation
This issue can be mitigated by disabling wide-area DNS queries. This can be done by setting enable-wide-are=no in /etc/avahi/avahi-daemon.conf
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| avahi | 25.10 questing |
Vulnerable, fix deferred
|
| 25.04 plucky |
Vulnerable, fix deferred
|
|
| 24.04 LTS noble |
Vulnerable, fix deferred
|
|
| 22.04 LTS jammy |
Vulnerable, fix deferred
|
|
| 20.04 LTS focal |
Vulnerable, fix deferred
|
|
| 18.04 LTS bionic |
Vulnerable, fix deferred
|
|
| 16.04 LTS xenial |
Vulnerable, fix deferred
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Notes
mdeslaur
Avahi upstream hasn't fixed this issue, but they now disable wide-area by default: https://github.com/avahi/avahi/pull/577 Another bug exists to track improving wide-area: https://github.com/avahi/avahi/issues/578 Since there is no proper fix for this issue from upstream, this CVE is being deferred for now.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.3 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |