Untrusted Pointer Dereference The advisory has been revoked - it doesn't affect any version of package unbound-debugsource (opens in a new tab)
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-RHEL8-UNBOUNDDEBUGSOURCE-1333834
- published26 Jul 2021
- disclosed3 Oct 2019
Introduced: 3 Oct 2019
CVE-2019-16866 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream unbound-debugsource package and not the unbound-debugsource package as distributed by RHEL.
Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.
References
- https://seclists.org/bugtraq/2019/Oct/23
- https://access.redhat.com/security/cve/CVE-2019-16866
- https://www.debian.org/security/2019/dsa-4544
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/
- https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog
- https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
- https://usn.ubuntu.com/4149-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/