{"id":"CVE-2025-54581","state":"PUBLISHED","title":"vproxy is vulnerable to a divide by zero DoS attack","description":"vproxy is an HTTP/HTTPS/SOCKS5 proxy server. In versions 2.3.3 and below, untrusted data is extracted from the user-controlled HTTP Proxy-Authorization header and passed to Extension::try_from and flows into parse_ttl_extension where it is parsed as a TTL value. If an attacker supplies a TTL of zero (e.g. by using a username such as 'configuredUser-ttl-0'), the modulo operation 'timestamp % ttl' will cause a division by zero panic, causing the server to crash causing a denial-of-service. This is fixed in version 2.4.0.","publishedAt":"2025-07-30T19:57:46.454Z","updatedAt":"2025-07-30T20:23:36.826Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["0x676e67 vproxy"],"affected":[{"vendor":"0x676e67","product":"vproxy","versions":[{"version":"< 2.4.0","status":"affected"}]}],"references":["https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c","https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079","https://github.com/0x676e67/vproxy/releases/tag/v2.4.0"],"weaknesses":["CWE-369"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/54xxx/CVE-2025-54581.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-54581","state":"PUBLISHED","datePublished":"2025-07-30T19:57:46.454Z","dateUpdated":"2025-07-30T20:23:36.826Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-07-25T16:19:16.093Z"},"containers":{"cna":{"title":"vproxy is vulnerable to a divide by zero DoS attack","descriptions":[{"lang":"en","value":"vproxy is an HTTP/HTTPS/SOCKS5 proxy server. In versions 2.3.3 and below, untrusted data is extracted from the user-controlled HTTP Proxy-Authorization header and passed to Extension::try_from and flows into parse_ttl_extension where it is parsed as a TTL value. If an attacker supplies a TTL of zero (e.g. by using a username such as 'configuredUser-ttl-0'), the modulo operation 'timestamp % ttl' will cause a division by zero panic, causing the server to crash causing a denial-of-service. This is fixed in version 2.4.0."}],"affected":[{"vendor":"0x676e67","product":"vproxy","versions":[{"version":"< 2.4.0","status":"affected"}]}],"references":[{"url":"https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c","name":"https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079","name":"https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079","tags":["x_refsource_MISC"]},{"url":"https://github.com/0x676e67/vproxy/releases/tag/v2.4.0","name":"https://github.com/0x676e67/vproxy/releases/tag/v2.4.0","tags":["x_refsource_MISC"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-369","lang":"en","description":"CWE-369: Divide By Zero","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-07-30T19:57:46.454Z"},"source":{"advisory":"GHSA-7h24-c332-p48c","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-07-30T20:13:38.841221Z","id":"CVE-2025-54581","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-07-30T20:23:36.826Z"}}]}}}