Improper Input Validation Affecting unbound package, versions <1.6.7-1ubuntu2.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-UNBOUND-320277
- published23 Jan 2018
- disclosed23 Jan 2018
Introduced: 23 Jan 2018
CVE-2017-15105 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 unbound to version 1.6.7-1ubuntu2.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream unbound package and not the unbound package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
A flaw was found in the way unbound before 1.6.8 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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-15105
- https://unbound.net/downloads/CVE-2017-15105.txt
- https://lists.debian.org/debian-lts-announce/2018/01/msg00039.html
- https://lists.debian.org/debian-lts-announce/2019/02/msg00022.html
- https://security-tracker.debian.org/tracker/CVE-2017-15105
- http://www.securityfocus.com/bid/102817
- https://usn.ubuntu.com/3673-1/