Overview
- Description
- c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.
- Source
- security-advisories@github.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
- security-advisories@github.com
- CWE-400
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:c-ares_project:c-ares:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "48937B75-3746-49D9-B738-B19EF0EF8D9F",
"versionEndExcluding": "1.19.1"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
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"negate": false,
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"vulnerable": true,
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},
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CC559B26-5DFC-4B7A-A27C-B77DE755DFF9"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
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"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73"
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