CVE-2018-16855
7.5
HIGH
CVSS 3.1
EPSS 70.8%
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.
How to fix CVE-2018-16855
To remediate CVE-2018-16855, upgrade the affected package to a fixed version below.
- Debian/pdns-recursor—upgrade to 4.1.8-1 or later
Is CVE-2018-16855 being exploited?
Likely — EPSS is 70.8%, placing CVE-2018-16855 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (1)
- from 0, < 4.1.8-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |