CVE-2016-2120
Last modified
CVE-2016-2120 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Authoritative | <= 3.4.10 |
| Powerdns | Authoritative | >= 4.0.0, <= 4.0.1 |
| Debian | Debian Linux | 8.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3764Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2120Issue Tracking, Third Party Advisory
- https://www.debian.org/security/2017/dsa-3764Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-2120?
How severe is CVE-2016-2120?
How do I fix CVE-2016-2120?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2016
- CVE-2016-2114The SMB1 protocol implementation in Samba 4.x before 4.2.11,…
- CVE-2016-2115Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4…
- CVE-2016-2116Memory leak in the jas_iccprof_createfrombuf function in Jas…
- CVE-2016-2117The atl2_probe function in drivers/net/ethernet/atheros/atlx…
- CVE-2016-2118The MS-SAMR and MS-LSAD protocol implementations in Samba 3.…7.5
- CVE-2016-2119libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x …7.5
- CVE-2016-2121A permissions flaw was found in redis, which sets weak permi…4
- CVE-2016-2122Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2016-2123A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba…8.8
- CVE-2016-2124A flaw was found in the way samba implemented SMB1 authentic…5.9
- CVE-2016-2125It was found that Samba before versions 4.5.3, 4.4.8, 4.3.13…6.5
- CVE-2016-2126Samba version 4.0.0 up to 4.5.2 is vulnerable to privilege e…6.5
Are you affected by CVE-2016-2120?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST