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Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-wsss-kt87-2qdv
Summary
resolv vulnerable to DoS via insufficient DNS domain name length validation
A denial of service vulnerability has been discovered in the resolv gem bundled with Ruby.

## Details
The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet.

An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting
length of the name.

This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition.

## Affected Version
The vulnerability affects the resolv gem bundled with the following Ruby series:
* Ruby 3.2 series: resolv version 0.2.2 and earlier
* Ruby 3.3 series: resolv version 0.3.0
* Ruby 3.4 series: resolv version 0.6.1 and earlier

## Credits
Thanks to Manu for discovering this issue.

## History
Originally published at 2025-07-08 07:00:00 (UTC)
Aliases
0
alias CVE-2025-24294
1
alias GHSA-xh69-987w-hrp8
Fixed_packages
0
url pkg:gem/resolv@0.2.3
purl pkg:gem/resolv@0.2.3
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/resolv@0.2.3
1
url pkg:gem/resolv@0.3.1
purl pkg:gem/resolv@0.3.1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/resolv@0.3.1
2
url pkg:gem/resolv@0.6.2
purl pkg:gem/resolv@0.6.2
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/resolv@0.6.2
Affected_packages
0
url pkg:gem/resolv@0.1.0
purl pkg:gem/resolv@0.1.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-wsss-kt87-2qdv
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url pkg:gem/resolv@0.2.0
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affected_by_vulnerabilities
0
vulnerability VCID-wsss-kt87-2qdv
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2
url pkg:gem/resolv@0.2.1
purl pkg:gem/resolv@0.2.1
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affected_by_vulnerabilities
0
vulnerability VCID-wsss-kt87-2qdv
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affected_by_vulnerabilities
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vulnerability VCID-wsss-kt87-2qdv
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/resolv@0.2.2
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url pkg:gem/resolv@0.3.0
purl pkg:gem/resolv@0.3.0
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affected_by_vulnerabilities
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vulnerability VCID-wsss-kt87-2qdv
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vulnerability VCID-wsss-kt87-2qdv
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url pkg:gem/resolv@0.4.0
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vulnerability VCID-wsss-kt87-2qdv
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vulnerability VCID-wsss-kt87-2qdv
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url pkg:gem/resolv@0.5.0
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vulnerability VCID-wsss-kt87-2qdv
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url pkg:gem/resolv@0.6.0
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affected_by_vulnerabilities
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vulnerability VCID-wsss-kt87-2qdv
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/resolv@0.6.0
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url pkg:gem/resolv@0.6.1
purl pkg:gem/resolv@0.6.1
is_vulnerable true
affected_by_vulnerabilities
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vulnerability VCID-wsss-kt87-2qdv
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/resolv@0.6.1
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url pkg:rpm/redhat/ruby@3.3.10-11?arch=el10_1
purl pkg:rpm/redhat/ruby@3.3.10-11?arch=el10_1
is_vulnerable true
affected_by_vulnerabilities
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vulnerability VCID-nw8a-e25n-mbgs
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vulnerability VCID-trka-k7zz-bkh3
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vulnerability VCID-wsss-kt87-2qdv
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url pkg:rpm/redhat/ruby@3.3.10-11?arch=el10_0
purl pkg:rpm/redhat/ruby@3.3.10-11?arch=el10_0
is_vulnerable true
affected_by_vulnerabilities
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vulnerability VCID-3954-3k4u-xbhr
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vulnerability VCID-trka-k7zz-bkh3
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vulnerability VCID-wsss-kt87-2qdv
resource_url http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/ruby@3.3.10-11%3Farch=el10_0
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url pkg:ruby/ruby@3.3
purl pkg:ruby/ruby@3.3
is_vulnerable true
affected_by_vulnerabilities
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vulnerability VCID-trka-k7zz-bkh3
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vulnerability VCID-wsss-kt87-2qdv
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vulnerability VCID-x126-x9qm-e7d3
resource_url http://public2.vulnerablecode.io/packages/pkg:ruby/ruby@3.3
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url pkg:ruby/ruby@3.4
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vulnerability VCID-nw8a-e25n-mbgs
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vulnerability VCID-trka-k7zz-bkh3
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vulnerability VCID-wsss-kt87-2qdv
resource_url http://public2.vulnerablecode.io/packages/pkg:ruby/ruby@3.4
References
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Weaknesses
0
cwe_id 1284
name Improper Validation of Specified Quantity in Input
description The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
1
cwe_id 400
name Uncontrolled Resource Consumption
description The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
2
cwe_id 937
name OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
description Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013.
3
cwe_id 1035
name OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
description Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017.
Exploits
Severity_range_score4.0 - 7.5
Exploitability0.5
Weighted_severity6.2
Risk_score3.1
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-wsss-kt87-2qdv