Out-of-bounds Read Affecting pdns-recursor package, versions <4.1.8-r0
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-ALPINE310-PDNSRECURSOR-454007
- published2 Dec 2018
- disclosed3 Dec 2018
Introduced: 2 Dec 2018
CVE-2018-16855 (opens in a new tab)How to fix?
Upgrade Alpine:3.10 pdns-recursor to version 4.1.8-r0 or higher.
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 Alpine.
See How to fix? for Alpine:3.10 relevant fixed versions and status.
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
- 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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-16855