fkie_cve-2025-30194
Vulnerability from fkie_nvd
Published
2025-04-29 12:15
Modified
2025-06-20 16:15
Severity ?
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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.\n\nThe remedy is: upgrade to the patched 1.9.9 version.\n\nA workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.\n\nWe would like to thank Charles Howes for bringing this issue to our attention."
},
{
"lang": "es",
"value": "Cuando DNSdist est\u00e1 configurado para proporcionar DoH a trav\u00e9s del proveedor nghttp2, un atacante puede provocar una denegaci\u00f3n de servicio creando un intercambio de DoH que desencadena un acceso ilegal a memoria (doble liberaci\u00f3n) y el bloqueo de DNSdist, lo que provoca una denegaci\u00f3n de servicio. La soluci\u00f3n es actualizar a la versi\u00f3n 1.9.9 parcheada. Una alternativa es cambiar temporalmente al proveedor h2o hasta que DNSdist se actualice a una versi\u00f3n corregida. Agradecemos a Charles Howes por informarnos sobre este problema."
}
],
"id": "CVE-2025-30194",
"lastModified": "2025-06-20T16:15:28.553",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "security@open-xchange.com",
"type": "Secondary"
}
]
},
"published": "2025-04-29T12:15:31.983",
"references": [
{
"source": "security@open-xchange.com",
"url": "https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2025/04/29/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.vicarius.io/vsociety/posts/cve-2025-30194-detection-dnsdist-vulnerability"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.vicarius.io/vsociety/posts/cve-2025-30194-mitigate-dnsdist-vulnerability"
}
],
"sourceIdentifier": "security@open-xchange.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "security@open-xchange.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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