USN-4374-1: Unbound vulnerabilities
27 May 2020
Several security issues were fixed in Unbound.
- unbound - validating, recursive, caching DNS resolver
Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Unbound
incorrectly handled certain queries. A remote attacker could use this issue
to perform an amplification attack directed at a target. (CVE-2020-12662)
It was discovered that Unbound incorrectly handled certain malformed
answers. A remote attacker could possibly use this issue to cause Unbound
to crash, resulting in a denial of service. (CVE-2020-12663)
The problem can be corrected by updating your system to the following package versions:
In general, a standard system update will make all the necessary changes.