CVE-2017-15120
HIGH
7.5
CVSS Score
Published: July 27, 2018 at 03:00 PM UTC
Updated: June 17, 2026 at 01:07 AM UTC
2 products affected across 2 vendorsDebian LinuxRecursor
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Severity
HIGH7.5
Exploit prediction
EPSS 51%
Description
An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 4.0.84.0.8
Affected range stops below 4.0.8, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (5)
Mailing Listx_refsource_MLISTPatchThird Party Advisory
Source: [email protected]
http://seclists.org/oss-sec/2017/q4/382VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/106335x_refsource_CONFIRMIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.htmlVendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2017/dsa-4063CVSS
7.5HIGHredhat
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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