Packages
- unbound - validating, recursive, caching DNS resolver
Details
Toshifumi Sakaguchi discovered that Unbound incorrectly handled name
compression for large RRsets, which could lead to excessive CPU usage.
An attacker could potentially use this issue to cause a denial of service
by sending specially crafted DNS responses.
Toshifumi Sakaguchi discovered that Unbound incorrectly handled name
compression for large RRsets, which could lead to excessive CPU usage.
An attacker could potentially use this issue to cause a denial of service
by sending specially crafted DNS responses.
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 | ||
|---|---|---|---|
| 24.10 oracular | libunbound8 – 1.20.0-1ubuntu2.1 | ||
| unbound – 1.20.0-1ubuntu2.1 | |||
| 24.04 noble | libunbound8 – 1.19.2-1ubuntu3.3 | ||
| unbound – 1.19.2-1ubuntu3.3 | |||
| 22.04 jammy | libunbound8 – 1.13.1-1ubuntu5.8 | ||
| unbound – 1.13.1-1ubuntu5.8 | |||
| 20.04 focal | libunbound8 – 1.9.4-2ubuntu1.9 | ||
| unbound – 1.9.4-2ubuntu1.9 | |||
| 18.04 bionic | libunbound2 – 1.6.7-1ubuntu2.6+esm3 | ||
| unbound – 1.6.7-1ubuntu2.6+esm3 | |||
| 16.04 xenial | libunbound2 – 1.5.8-1ubuntu1.1+esm2 | ||
| unbound – 1.5.8-1ubuntu1.1+esm2 | |||
| 14.04 trusty | libunbound2 – 1.4.22-1ubuntu4.14.04.3+esm2 | ||
| unbound – 1.4.22-1ubuntu4.14.04.3+esm2 | |||
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