CVE-2025-30194 Affecting dnsdist package, versions <1.9.9-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE321-DNSDIST-9954685
- published2 May 2025
- disclosed29 Apr 2025
Introduced: 29 Apr 2025
NewCVE-2025-30194 (opens in a new tab)How to fix?
Upgrade Alpine:3.21 dnsdist to version 1.9.9-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream dnsdist package and not the dnsdist package as distributed by Alpine.
See How to fix? for Alpine:3.21 relevant fixed versions and status.
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.