Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package pdns-recursor (opens in a new tab)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-UBUNTU1810-PDNSRECURSOR-404521
- published2 Dec 2018
- disclosed3 Dec 2018
Introduced: 2 Dec 2018
CVE-2018-16855 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:18.10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pdns-recursor package and not the pdns-recursor package as distributed by Ubuntu.
An issue has been found in PowerDNS Recursor before version 4.1.8 where a remote attacker sending a DNS query can trigger an out-of-bounds memory read while computing the hash of the query for a packet cache lookup, possibly leading to a crash.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-16855
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16855
- https://security-tracker.debian.org/tracker/CVE-2018-16855
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855