Vulnerability CVE-2017-15120
Published: 2018-07-27

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.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Powerdns -> Recursor 
Debian -> Debian linux 

 References:
http://seclists.org/oss-sec/2017/q4/382
http://www.securityfocus.com/bid/106335
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15120
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html
https://www.debian.org/security/2017/dsa-4063
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