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73 vulnerabilities by powerdns
CVE-2025-30187 (GCVE-0-2025-30187)
Vulnerability from cvelistv5 – Published: 2025-09-18 09:21 – Updated: 2025-11-04 21:09
VLAI?
Summary
In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.
Severity ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
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CVE-2025-30192 (GCVE-0-2025-30192)
Vulnerability from cvelistv5 – Published: 2025-07-21 12:49 – Updated: 2025-07-21 13:05
VLAI?
Summary
An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries.
The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers.
The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.
Severity ?
7.5 (High)
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
Impacted products
Credits
Xiang Li of AOSP Lab Nankai University
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CVE-2025-30193 (GCVE-0-2025-30193)
Vulnerability from cvelistv5 – Published: 2025-05-20 11:17 – Updated: 2025-05-20 13:16
VLAI?
Summary
In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP connection from a client, an attacker can cause a denial of service by crafting a TCP exchange that triggers an exhaustion of the stack and a crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.10 version.
A workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection setting.
We would like to thank Renaud Allard for bringing this issue to our attention.
Severity ?
7.5 (High)
CWE
- CWE-674 - Uncontrolled Recursion
Assigner
References
Credits
Renaud Allard
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CVE-2025-30194 (GCVE-0-2025-30194)
Vulnerability from cvelistv5 – Published: 2025-04-29 11:25 – Updated: 2025-06-20 15:42
VLAI?
Summary
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.9 version.
A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.
We would like to thank Charles Howes for bringing this issue to our attention.
Severity ?
7.5 (High)
CWE
- CWE-416 - User After Free
Assigner
References
Credits
Charles Howes
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CVE-2025-30195 (GCVE-0-2025-30195)
Vulnerability from cvelistv5 – Published: 2025-04-07 13:24 – Updated: 2025-04-07 16:03
VLAI?
Summary
An attacker can publish a zone containing specific Resource Record Sets. Processing and caching results for these sets can lead to an illegal memory accesses and crash of the Recursor, causing a denial of service.
The remedy is: upgrade to the patched 5.2.1 version.
We would like to thank Volodymyr Ilyin for bringing this issue to our attention.
Severity ?
7.5 (High)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Credits
Volodymyr Ilyin
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CVE-2024-25590 (GCVE-0-2024-25590)
Vulnerability from cvelistv5 – Published: 2024-10-03 15:29 – Updated: 2024-10-03 18:03
VLAI?
Summary
An attacker can publish a zone containing specific Resource Record Sets.
Repeatedly processing and caching results for these sets can lead to a
denial of service.
Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Credits
Toshifumi Sakaguchi
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CVE-2024-25581 (GCVE-0-2024-25581)
Vulnerability from cvelistv5 – Published: 2024-05-13 11:49 – Updated: 2025-02-13 17:40
VLAI?
Summary
When incoming DNS over HTTPS support is enabled using the nghttp2 provider, and queries are routed to a tcp-only or DNS over TLS backend, an attacker can trigger an assertion failure in DNSdist by sending a request for a zone transfer (AXFR or IXFR) over DNS over HTTPS, causing the process to stop and thus leading to a Denial of Service. DNS over HTTPS is not enabled by default, and backends are using plain DNS (Do53) by default.
Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Credits
Daniel Stirnimann from Switch
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CVE-2024-25583 (GCVE-0-2024-25583)
Vulnerability from cvelistv5 – Published: 2024-04-25 09:45 – Updated: 2025-02-13 17:40
VLAI?
Summary
A crafted response from an upstream server the recursor has been configured to forward-recurse to can cause a Denial of Service in the Recursor. The default configuration of the Recursor does not use recursive forwarding and is not affected.
Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
Impacted products
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CVE-2023-50387 (GCVE-0-2023-50387)
Vulnerability from cvelistv5 – Published: 2024-02-14 00:00 – Updated: 2025-11-04 18:20
VLAI?
Summary
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
References
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CVE-2023-26437 (GCVE-0-2023-26437)
Vulnerability from cvelistv5 – Published: 2023-04-04 14:37 – Updated: 2025-02-13 16:44
VLAI?
Summary
Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
Severity ?
CWE
- Denial of service
Assigner
References
Impacted products
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CVE-2023-22617 (GCVE-0-2023-22617)
Vulnerability from cvelistv5 – Published: 2023-01-21 00:00 – Updated: 2025-04-03 14:38
VLAI?
Summary
A remote attacker might be able to cause infinite recursion in PowerDNS Recursor 4.8.0 via a DNS query that retrieves DS records for a misconfigured domain, because QName minimization is used in QM fallback mode. This is fixed in 4.8.1.
Severity ?
7.5 (High)
CWE
- n/a
Assigner
References
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CVE-2022-37428 (GCVE-0-2022-37428)
Vulnerability from cvelistv5 – Published: 2022-08-23 16:33 – Updated: 2024-08-03 10:29
VLAI?
Summary
PowerDNS Recursor up to and including 4.5.9, 4.6.2 and 4.7.1, when protobuf logging is enabled, has Improper Cleanup upon a Thrown Exception, leading to a denial of service (daemon crash) via a DNS query that leads to an answer with specific properties.
Severity ?
6.5 (Medium)
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2022-27227 (GCVE-0-2022-27227)
Vulnerability from cvelistv5 – Published: 2022-03-25 14:41 – Updated: 2024-08-03 05:25
VLAI?
Summary
In PowerDNS Authoritative Server before 4.4.3, 4.5.x before 4.5.4, and 4.6.x before 4.6.1 and PowerDNS Recursor before 4.4.8, 4.5.x before 4.5.8, and 4.6.x before 4.6.1, insufficient validation of an IXFR end condition causes incomplete zone transfers to be handled as successful transfers.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
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CVE-2021-36754 (GCVE-0-2021-36754)
Vulnerability from cvelistv5 – Published: 2021-07-27 05:35 – Updated: 2024-08-04 01:01
VLAI?
Summary
PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-25829 (GCVE-0-2020-25829)
Vulnerability from cvelistv5 – Published: 2020-10-16 05:07 – Updated: 2024-08-04 15:40
VLAI?
Summary
An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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CVE-2020-24698 (GCVE-0-2020-24698)
Vulnerability from cvelistv5 – Published: 2020-10-02 08:23 – Updated: 2024-08-04 15:19
VLAI?
Summary
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker might be able to cause a double-free, leading to a crash or possibly arbitrary code execution. by sending crafted queries with a GSS-TSIG signature.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
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CVE-2020-24697 (GCVE-0-2020-24697)
Vulnerability from cvelistv5 – Published: 2020-10-02 08:23 – Updated: 2024-08-04 15:19
VLAI?
Summary
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can cause a denial of service by sending crafted queries with a GSS-TSIG signature.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2020-24696 (GCVE-0-2020-24696)
Vulnerability from cvelistv5 – Published: 2020-10-02 08:21 – Updated: 2024-08-04 15:19
VLAI?
Summary
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can trigger a race condition leading to a crash, or possibly arbitrary code execution, by sending crafted queries with a GSS-TSIG signature.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2020-17482 (GCVE-0-2020-17482)
Vulnerability from cvelistv5 – Published: 2020-10-02 08:21 – Updated: 2024-08-04 14:00
VLAI?
Summary
An issue has been found in PowerDNS Authoritative Server before 4.3.1 where an authorized user with the ability to insert crafted records into a zone might be able to leak the content of uninitialized memory.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-14196 (GCVE-0-2020-14196)
Vulnerability from cvelistv5 – Published: 2020-07-01 17:03 – Updated: 2024-08-04 12:39
VLAI?
Summary
In PowerDNS Recursor versions up to and including 4.3.1, 4.2.2 and 4.1.16, the ACL restricting access to the internal web server is not properly enforced.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-10995 (GCVE-0-2020-10995)
Vulnerability from cvelistv5 – Published: 2020-05-19 16:04 – Updated: 2024-08-04 11:21
VLAI?
Summary
PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. PowerDNS Recursor 4.1.16, 4.2.2 and 4.3.1 contain a mitigation to limit the impact of this DNS protocol issue.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2020-10030 (GCVE-0-2020-10030)
Vulnerability from cvelistv5 – Published: 2020-05-19 15:52 – Updated: 2024-08-04 10:50
VLAI?
Summary
An issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's hostname) to cause disclosure of uninitialized memory content via a stack-based out-of-bounds read. It only occurs on systems where gethostname() does not have '\0' termination of the returned string if the hostname is larger than the supplied buffer. (Linux systems are not affected because the buffer is always large enough. OpenBSD systems are not affected because the returned hostname always has '\0' termination.) Under some conditions, this issue can lead to the writing of one '\0' byte out-of-bounds on the stack, causing a denial of service or possibly arbitrary code execution.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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CVE-2020-12244 (GCVE-0-2020-12244)
Vulnerability from cvelistv5 – Published: 2020-05-19 13:51 – Updated: 2024-08-04 11:48
VLAI?
Summary
An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2015-5230 (GCVE-0-2015-5230)
Vulnerability from cvelistv5 – Published: 2020-01-15 16:32 – Updated: 2024-08-06 06:41
VLAI?
Summary
The DNS packet parsing/generation code in PowerDNS (aka pdns) Authoritative Server 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via crafted query packets.
Severity ?
No CVSS data available.
CWE
- Other
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PowerDNS | PowerDNS Authoritative Server |
Affected:
3.4.x before 3.4.6
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CVE-2019-10203 (GCVE-0-2019-10203)
Vulnerability from cvelistv5 – Published: 2019-11-22 12:01 – Updated: 2024-08-04 22:17
VLAI?
Summary
PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.
Severity ?
4.3 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2019-10163 (GCVE-0-2019-10163)
Vulnerability from cvelistv5 – Published: 2019-07-30 22:16 – Updated: 2024-08-04 22:10
VLAI?
Summary
A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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CVE-2019-10162 (GCVE-0-2019-10162)
Vulnerability from cvelistv5 – Published: 2019-07-30 22:15 – Updated: 2024-08-04 22:10
VLAI?
Summary
A vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.10, 4.0.8 allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. The issue is due to the fact that the Authoritative Server will exit when it runs into a parsing error while looking up the NS/A/AAAA records it is about to use for an outgoing notify.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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CVE-2019-3871 (GCVE-0-2019-3871)
Vulnerability from cvelistv5 – Published: 2019-03-21 20:42 – Updated: 2024-08-04 19:19
VLAI?
Summary
A vulnerability was found in PowerDNS Authoritative Server before 4.0.7 and before 4.1.7. An insufficient validation of data coming from the user when building a HTTP request from a DNS query in the HTTP Connector of the Remote backend, allowing a remote user to cause a denial of service by making the server connect to an invalid endpoint, or possibly information disclosure by making the server connect to an internal endpoint and somehow extracting meaningful information about the response
Severity ?
6.5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The PowerDNS Project | pdns |
Affected:
4.1.7
Affected: 4.0.7 |
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CVE-2019-3806 (GCVE-0-2019-3806)
Vulnerability from cvelistv5 – Published: 2019-01-29 17:00 – Updated: 2024-08-04 19:19
VLAI?
Summary
An issue has been found in PowerDNS Recursor versions after 4.1.3 before 4.1.9 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.
Severity ?
5.4 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Power DNS | pdns-recursor |
Affected:
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CVE-2019-3807 (GCVE-0-2019-3807)
Vulnerability from cvelistv5 – Published: 2019-01-29 17:00 – Updated: 2024-08-04 19:19
VLAI?
Summary
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.
Severity ?
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Power DNS | pdns-recursor |
Affected:
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