CVE-2015-5311
MediumPowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets.
Published Nov 17, 2015 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2015-5311, UBUNTU-CVE-2015-5311
Key Facts
Patch immediately- CVE-2015-5311 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Authoritative (Powerdns), pdns (debian), pdns-recursor (debian) and 6 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 67% probability of exploitation in the next 30 days.
- Fixed versions are available, including pdns 3.4.6-9.2, pdns 3.4.7-1, pdns-backend-ldap 3.4.6-9.2.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
67%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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Description
PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets.
Affected Products
26 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| AuthoritativePowerdns | 3.4.4, 3.4.5, 3.4.6 | n/a |
| pdnsdebian | See advisory | 3.4.7-1 |
| pdns-recursordebian | See advisory | 0 |
| pdns-backend-ldapsuse | See advisory | 3.4.6-9.2 |
| pdns-backend-luasuse | See advisory | 3.4.6-9.2 |
Patched Releases
pdns
3.4.6-9.2, 3.4.7-1
pdns-backend-ldap
3.4.6-9.2
pdns-backend-lua
3.4.6-9.2
pdns-backend-mydns
3.4.6-9.2
pdns-backend-mysql
3.4.6-9.2
pdns-backend-postgresql
3.4.6-9.2
pdns-backend-sqlite3
3.4.6-9.2
Timeline
Publicly disclosed
Nov 17, 2015
Last updated
Aug 4, 2026
Weakness Type
- CWE-20 Improper Input Validation
References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2015-5311
- advisoryhttps://ubuntu.com/security/CVE-2015-5311
- advisoryhttps://www.cve.org/CVERecord?id=CVE-2015-5311
- patchhttps://doc.powerdns.com/md/security/powerdns-advisory-2015-03/
- otherFEDORA-2015-8b8d94ebbb
FAQ
Common Questions.
PowerDNS (aka pdns) Authoritative Server 3.4.4 before 3.4.7 allows remote attackers to cause a denial of service (assertion failure and server crash) via crafted query packets.
Affected: Authoritative (Powerdns) versions 3.4.4, 3.4.5, 3.4.6; pdns (debian); pdns-recursor (debian), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including pdns 3.4.6-9.2, pdns 3.4.7-1, pdns-backend-ldap 3.4.6-9.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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