| Name | CVE-2017-15120 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-4063-1 |
| NVD severity | medium (attack range: remote) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| pdns-recursor (PTS) | jessie | 3.6.2-2+deb8u4 | fixed |
| jessie (security) | 3.6.2-2+deb8u3 | fixed | |
| stretch | 4.0.4-1+deb9u4 | fixed | |
| stretch (security) | 4.0.4-1+deb9u3 | fixed | |
| buster, sid | 4.1.11-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| pdns-recursor | source | (unstable) | 4.1.0-1 | medium | ||
| pdns-recursor | source | jessie | (not affected) | |||
| pdns-recursor | source | stretch | 4.0.4-1+deb9u3 | medium | DSA-4063-1 | |
| pdns-recursor | source | wheezy | (not affected) |
[jessie] - pdns-recursor <not-affected> (Vulnerable code introduced in 4.0.0)
[wheezy] - pdns-recursor <not-affected> (Vulnerable code introduced in 4.0.0)
Patch: https://downloads.powerdns.com/patches/2017-08
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html