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CVE-2019-3807

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the...

3.7 LowFix available

CVE-2019-3807 is a low vulnerability (CVSS 3.7) in Powerdns Recursor, published January 23, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 30th percentile. Fixed in pdns-recursor 4.1.9-r0.

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.37%Down 0.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 3.7

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
CVE-2019-3807
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-345
Updated
2026-11-02
EUVDEUVD-2019-13433 3.7

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
EUVD-2019-13433
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-3h27-2wg2-w59m 9.8

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the...

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
GHSA-3h27-2wg2-w59m
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-295
Updated
2026-11-02
NVD 3.7

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
CVE-2019-3807
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:P/I:P/A:N
Weakness
CWE-345, CWE-295
Updated
2026-11-02
OSVALPINE-CVE-2019-3807 9.8

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
ALPINE-CVE-2019-3807
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 9.8

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
CVE-2019-3807
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 7 moreShow less
OSVDEBIAN-CVE-2019-3807 9.8

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
DEBIAN-CVE-2019-3807
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2019-3807 3.7

An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.

Record
UBUNTU-CVE-2019-3807
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2019-0051 No score

Updated pdns-recursor package fixes security vulnerabilities

An issue has been found in PowerDNS Recursor where Lua hooks are not properly applied to queries received over TCP in some specific combination of settings, possibly bypassing security policies enforced using Lua (CVE-2019-3806).

An issue has been found in PowerDNS Recursor where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation (CVE-2019-3807).

Record
MGASA-2019-0051
Updated
2026-11-02
OSVopenSUSE-SU-2019:0100-1 No score

Security update for pdns-recursor

This update for pdns-recursor fixes the following issues:

  • CVE-2019-3807: Fixed insufficient validation of DNSSEC signatures (boo#1121889)
Record
openSUSE-SU-2019:0100-1
Updated
2026-11-02
OSVopenSUSE-SU-2019:0107-1 No score

Security update for pdns-recursor

This update for pdns-recursor fixes the following issues:

  • CVE-2019-3807: Fixed insufficient validation of DNSSEC signatures (boo#1121889)

This update was imported from the openSUSE:Leap:15.0:Update update project.

Record
openSUSE-SU-2019:0107-1
Updated
2026-11-02
OSVopenSUSE-SU-2019:0131-1 No score

Security update for pdns-recursor

This update for pdns-recursor to version 4.1.10 fixes the following issues:

Security issues fixed:

  • CVE-2019-3806: Fixed a case when Lua hooks are not called over TCP (boo#1121887)
  • CVE-2019-3807: Fixed an issue where DNSSEC validation was not performed for AA=0 responses (boo#1121889)
Record
openSUSE-SU-2019:0131-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11157-1 No score

pdns-recursor-4.5.5-1.3 on GA media

These are all security issues fixed in the pdns-recursor-4.5.5-1.3 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11157-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
pdns-recursor
Alpine:v3.10
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.11
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.12
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.13
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.14
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.15
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.16
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.17
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.18
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.19
 before 4.1.9-r0
4.1.9-r0
Show 16 moreShow less
Affected packages
PackageAffectedFixed
pdns-recursor
Alpine:v3.20
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.21
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.22
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.23
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.24
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.8
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Alpine:v3.9
 before 4.1.9-r0
4.1.9-r0
pdns-recursor
Debian:12
 before 4.1.9-1
4.1.9-1
pdns-recursor
Debian:13
 before 4.1.9-1
4.1.9-1
pdns-recursor
Debian:14
 before 4.1.9-1
4.1.9-1
pdns-recursor
Mageia:6
 before 4.1.9-1.mga6
4.1.9-1.mga6
pdns-recursor
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
3.7.3-14.0.0~alpha1-14.0.0~alpha1-24.0.0~alpha2-24.0.0~alpha2-2ubuntu0.14.0.0~alpha2-2ubuntu0.1+esm1
 None known
pdns-recursor
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
4.0.6-14.0.6-1build14.0.7-14.1.1-14.1.1-1build14.1.1-24.1.1-2ubuntu0.1~esm1
 None known
pdns-recursor
SUSE:Package Hub 15
 before 4.1.2-bp150.2.6.1
4.1.2-bp150.2.6.1
pdns-recursor
SUSE:Package Hub 12 SP1
 before 4.1.10-16.1
4.1.10-16.1
pdns-recursor
openSUSE:Tumbleweed
 before 4.5.5-1.3
4.5.5-1.3

History

History
WhenChangedSources
2026-11-03affected, aliases, referencesOSV
2026-11-03aliasesEUVD
2026-11-02createdCVE List, GitHub Advisories, NVD, OSV

References

Show 28 moreShow less
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