Remote Denial of Service Vulnerability in PowerDNS Recursor
CVE-2017-15120

7.5HIGH

Key Information:

Vendor
Powerdns
Status
Pdns-recursor
Vendor
CVE Published:
27 July 2018

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A parsing issue in PowerDNS Recursor prior to version 4.0.8 results in a NULL pointer dereference when processing malformed responses containing a CNAME record of a different class than IN. This vulnerability could allow an unauthenticated remote attacker to trigger a denial of service, potentially disrupting the availability of the DNS service.

Affected Version(s)

pdns-recursor 4.0.8

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-15120_PoC
Created by shutingrz

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120
x_refsource_CONFIRM
https://doc.powerdns.com/recursor/security-advisories/pow...
x_refsource_CONFIRM
https://www.debian.org/security/2017/dsa-4063
vendor-advisoryx_refsource_DEBIAN

CVSS V3.1

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

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.