Vulnerability Details : CVE-2016-2120

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.
Vulnerability category: Overflow
Published 2018-11-01 13:29:00
Updated 2019-10-09 23:17:35
Source Red Hat, Inc.
View at NVD,   CVE.org

Threat overview for CVE-2016-2120

Top countries where our scanners detected CVE-2016-2120
Top open port discovered on systems with this issue 53
IPs affected by CVE-2016-2120 1,764
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2016-2120!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2016-2120

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 19 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-2120

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
4.0
 MEDIUM AV:N/AC:L/Au:S/C:N/I:N/A:P
8.0
2.9
 nvd@nist.gov
6.5
 MEDIUM CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
 nvd@nist.gov
7.5
 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 secalert@redhat.com

CWE ids for CVE-2016-2120

  • The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
    Assigned by:
    • nvd@nist.gov (Primary)
    • secalert@redhat.com (Secondary)

References for CVE-2016-2120

Products affected by CVE-2016-2120

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