CVE-2016-2120: Integer Overflow
First published: Thu Nov 01 2018(Updated: )
An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PowerDNS Authoritative | <=3.4.10 | |
| PowerDNS Authoritative | >=4.0.0<=4.0.1 | |
| Debian Debian Linux | =8.0 | |
| debian/pdns | 4.1.6-3+deb10u1 4.4.1-1 4.7.3-2 4.8.3-1 4.8.3-2 |
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Reference Links
Frequently Asked Questions
What is CVE-2016-2120?
CVE-2016-2120 is an issue found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 that allows an authorized user to crash the server by inserting a specially crafted record in a zone under their control.
What is the severity of CVE-2016-2120?
The severity of CVE-2016-2120 is high with a CVSS score of 6.5.
Which software versions are affected by CVE-2016-2120?
PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 are affected by CVE-2016-2120.
How can CVE-2016-2120 be fixed?
To fix CVE-2016-2120, users should update their PowerDNS Authoritative Server to version 4.1.6-3+deb10u1 or later.
Where can I find more information about CVE-2016-2120?
More information about CVE-2016-2120 can be found at the following references: [PowerDNS Advisory](https://doc.powerdns.com/md/security/powerdns-advisory-2016-05/), [Debian Security Tracker](https://security-tracker.debian.org/tracker/CVE-2016-2120), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120).
- collector/nvd-index
- collector/security-tracker-debian
- agent/references
- agent/weakness
- agent/severity
- agent/author
- agent/type
- agent/event
- agent/description
- agent/last-modified-date
- agent/first-publish-date
- agent/softwarecombine
- agent/tags
- collector/mitre-cve
- source/MITRE
- vendor/powerdns
- canonical/powerdns authoritative
- version/powerdns authoritative/3.4.10
- version/powerdns authoritative/4.0.0
- version/powerdns authoritative/4.0.1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- package-manager/debian