CVE-2018-16855

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
[UNKNOWN]	pdns-recursor	4.1.8

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855Issue Tracking, Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.htmlVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855Issue Tracking, Third Party Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.htmlVendor Advisory

Timeline

Published: Dec 3, 2018
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2018

CVE-2018-168567.5In a default Red Hat Openstack Platform Director installation, openstack-octavia before versions openstack-octavia 2.0.2-5 and openstack-oct CVE-2018-168575.9Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of pa CVE-2018-168589.8It was found that libreoffice before versions 6.0.7 and 6.1.3 was vulnerable to a directory traversal attack which could be used to execute CVE-2018-168594.4Execution of Ansible playbooks on Windows platforms with PowerShell ScriptBlock logging and Module logging enabled can allow for 'become' pa CVE-2018-16865.4IBM Maximo Asset Management 7.6 through 7.6.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary Java CVE-2018-168607.5A flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up t CVE-2018-168614.8A cross-site scripting (XSS) flaw was found in the foreman component of satellite. An attacker with privilege to create entries using the Ho CVE-2018-168625.5A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (remova CVE-2018-168637.8It was found that RHSA-2018:2918 did not fully fix CVE-2018-16509. An attacker could possibly exploit another variant of the flaw and bypass CVE-2018-168647.8An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journa CVE-2018-168657.8An allocation of memory without limits, that could result in the stack clashing with another memory region, was discovered in systemd-journa CVE-2018-168663.3An out of bounds read was discovered in systemd-journald in the way it parses log messages that terminate with a colon ':'. A local attacker