Debian Security Advisory
DLA-1676-1 unbound -- LTS security update
- Date Reported:
- 14 Feb 2019
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 887733.
In Mitre's CVE dictionary: CVE-2017-15105.
- More information:
Ralph Dolmans and Karst Koymans found a flaw in the way unbound, a validating, recursive, caching DNS resolver, validated wildcard-synthesized NSEC records.
An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.
For more information please refer to the upstream advisory at https://unbound.net/downloads/CVE-2017-15105.txt.
For Debian 8
Jessie, this problem has been fixed in version 1.4.22-3+deb8u4.
We recommend that you upgrade your unbound packages.
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS