CVE-2016-6172
medium
CVSS v3
6.8
CVSS v2
7.1
VIR risk
6.8
Description
PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.
Predictions
Exploit likelihood
77%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-6172
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2016-6172.html
Vendor advisory: secalert@redhat.com — https://github.com/sischkg/xfer-limit/blob/master/README.md
Vendor advisory: secalert@redhat.com — https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| suse | 42.1 | affected | |
| suse | 13.2 | affected | |
| debian | bookworm | fixed | 4.0.1-1 |
| debian | bullseye | fixed | 4.0.1-1 |
| debian | forky | fixed | 4.0.1-1 |
| debian | sid | fixed | 4.0.1-1 |
| debian | trixie | fixed | 4.0.1-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| powerdns | authoritative_server | {"endIncluding":"4.0.0"} | |
References
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00085.html
- http://www.debian.org/security/2016/dsa-3664
- http://www.openwall.com/lists/oss-security/2016/07/06/3
- http://www.securityfocus.com/bid/91678
- http://www.securitytracker.com/id/1036242
- https://doc.powerdns.com/md/changelog/#powerdns-authoritative-server-401
- https://github.com/PowerDNS/pdns/issues/4128
- https://github.com/PowerDNS/pdns/issues/4133
- https://github.com/PowerDNS/pdns/pull/4134
- https://github.com/sischkg/xfer-limit/blob/master/README.md
- https://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html
- https://www.suse.com/security/cve/CVE-2016-6172.html
- https://security-tracker.debian.org/tracker/CVE-2016-6172
CWEs
CWE-400
Verify integrity in audit chain (admin only). AS-IS.