Integer Overflow Vulnerability in PowerDNS Authoritative Server by PowerDNS
CVE-2016-2120

6.5MEDIUM

Key Information:

Vendor

[unknown]

Status
Pdns
Vendor
CVE Published:
1 November 2018

What is CVE-2016-2120?

An integer overflow vulnerability exists in PowerDNS Authoritative Server versions up to 3.4.10 and 4.0.1 that allows an authorized user to crash the server. This is achieved by placing a specially crafted DNS record within a zone they control and then querying that record. The root cause of the issue lies in improper checking of record content size, leading to a read past the buffer boundary—a situation that could be exploited to disrupt service.

Affected Version(s)

pdns up to and including 3.4.10

pdns up to and including 4.0.1

References

https://www.debian.org/security/2017/dsa-3764
vendor-advisoryx_refsource_DEBIAN
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.