CVE-2016-5427
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 4.0.0~alpha1-1 |
| sid | Fixed | 4.0.0~alpha1-1 |
| forky | Fixed | 4.0.0~alpha1-1 |
| bullseye | Fixed | 4.0.0~alpha1-1 |
| bookworm | Fixed | 4.0.0~alpha1-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| powerdns | authoritative | {"endIncluding":"3.4.9"} | |
References
- http://www.debian.org/security/2016/dsa-3664
- http://www.openwall.com/lists/oss-security/2016/09/09/3
- http://www.securityfocus.com/bid/92917
- http://www.securitytracker.com/id/1036761
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-01/
- https://github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
- https://security-tracker.debian.org/tracker/CVE-2016-5427
CWEs
CWE-399
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.