Vulnerabilites related to Ruby - resolv
CVE-2025-24294 (GCVE-0-2025-24294)
Vulnerability from cvelistv5
Published
2025-07-12 03:30
Modified
2025-07-16 13:37
Severity ?
VLAI Severity ?
EPSS score ?
Summary
The attack vector is a potential Denial of Service (DoS). 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.
References
{ "containers": { "adp": [ { "metrics": [ { "cvssV3_1": { "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" } }, { "other": { "content": { "id": "CVE-2025-24294", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2025-07-15T13:48:11.171487Z", "version": "2.0.3" }, "type": "ssvc" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2025-07-16T13:37:43.395Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "references": [ { "tags": [ "vendor-advisory" ], "url": "https://www.ruby-lang.org/en/news/2025/07/08/dos-resolv-cve-2025-24294/" } ], "title": "CISA ADP Vulnrichment" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "resolv", "vendor": "Ruby", "versions": [ { "lessThanOrEqual": "0.2.2", "status": "affected", "version": "0.2", "versionType": "custom" }, { "lessThanOrEqual": "0.3.0", "status": "affected", "version": "0.3.0", "versionType": "custom" }, { "lessThanOrEqual": "0.6.1", "status": "affected", "version": "0.6", "versionType": "custom" } ] } ], "descriptions": [ { "lang": "en", "value": "The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet.\r\n\r\nAn 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.\r\n\r\nThis resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition." } ], "providerMetadata": { "dateUpdated": "2025-07-12T03:30:40.226Z", "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone" }, "references": [ { "url": "https://www.ruby-lang.org/en/news/2025/07/08/dos-resolv-cve-2025-24294/" } ] } }, "cveMetadata": { "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "assignerShortName": "hackerone", "cveId": "CVE-2025-24294", "datePublished": "2025-07-12T03:30:40.226Z", "dateReserved": "2025-01-17T01:00:07.458Z", "dateUpdated": "2025-07-16T13:37:43.395Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }