Out-of-bounds read in PowerDNS Recursor - CVE-2018-16855
Published: November 28, 2018 / Updated: November 28, 2018
Vulnerability identifier: #VU16147
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-16855
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PowerDNS.COM B.V.
Affected software:
PowerDNS Recursor
PowerDNS Recursor
Detailed vulnerability description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to out-of-bounds memory read while computing the hash of the query for a packet cache lookup. A remote attacker can send a specially crafted DNS query and cause the service to crash.
How to mitigate CVE-2018-16855
Update to version 4.1.8.