OPENSUSE-SU-2026:20461-1
Vulnerability from csaf_opensuse - Published: 2026-04-02 09:11 - Updated: 2026-09-17 17:29Summary
Security update for dnsdist
Severity
Low
Notes
Title of the patch: Security update for dnsdist
Description of the patch: This update for dnsdist fixes the following issues:
Update to dnsdist 1.9.11:
- CVE-2025-8671: add mitigations for the HTTP/2 MadeYouReset attack (bsc#1253852).
- CVE-2025-30187: denial of service via crafted DoH exchange (bsc#1250054).
Patchnames: openSUSE-Leap-16.0-475
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Recommended
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 16.0:dnsdist-0:1.9.11-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:dnsdist-0:1.9.11-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:dnsdist-0:1.9.11-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:dnsdist-0:1.9.11-160000.1.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
moderate
7.5 (High)
Affected products
Recommended
4 products, the same list as for
CVE-2025-30187
Threats
Impact
important
References
12 references
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"vulnerabilities": [
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],
"notes": [
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"category": "general",
"text": "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.",
"title": "CVE description"
}
],
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"text": "A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them-using malformed frames or flow control errors-an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released.",
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}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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