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Ubuntu Security Notice USN-5569-1

Ubuntu Security Notice 5569-1 - Xiang Li discovered that Unbound incorrectly handled delegation caching. A remote attacker could use this issue to keep rogue domain names resolvable long after they have been revoked.

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==========================================================================Ubuntu Security Notice USN-5569-1August 16, 2022unbound vulnerabilities==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTS- Ubuntu 20.04 LTS- Ubuntu 18.04 LTSSummary:Unbound could be made to cache rogue domain names.Software Description:- unbound: validating, recursive, caching DNS resolverDetails:Xiang Li discovered that Unbound incorrectly handled delegation caching.A remote attacker could use this issue to keep rogue domain namesresolvable long after they have been revoked.Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS:  libunbound8                     1.13.1-1ubuntu5.1  unbound                         1.13.1-1ubuntu5.1Ubuntu 20.04 LTS:  libunbound8                     1.9.4-2ubuntu1.3  unbound                         1.9.4-2ubuntu1.3Ubuntu 18.04 LTS:  libunbound2                     1.6.7-1ubuntu2.5  unbound                         1.6.7-1ubuntu2.5In general, a standard system update will make all the necessary changes.References:  https://ubuntu.com/security/notices/USN-5569-1  CVE-2022-30698, CVE-2022-30699Package Information:  https://launchpad.net/ubuntu/+source/unbound/1.13.1-1ubuntu5.1  https://launchpad.net/ubuntu/+source/unbound/1.9.4-2ubuntu1.3  https://launchpad.net/ubuntu/+source/unbound/1.6.7-1ubuntu2.5

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