CVE-2018-16855

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 19.83% Top 5%
Vendor Advisory powerdns.com
Affected: [UNKNOWN] pdns-recursor
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855 issue tracking third party advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-16855?
CVE-2018-16855 has been scored as a high severity vulnerability.
How to fix CVE-2018-16855?
To fix CVE-2018-16855, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16855 being actively exploited in the wild?
It is possible that CVE-2018-16855 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~20% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-16855?
CVE-2018-16855 affects [UNKNOWN] pdns-recursor.
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