{"id":"CVE-2025-54581","summary":"vproxy is vulnerable to a divide by zero DoS attack","details":"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.","aliases":["GHSA-7h24-c332-p48c"],"modified":"2026-08-12T03:51:25.043023746Z","published":"2025-07-30T19:57:46.454Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-369"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54581.json"},"references":[{"type":"WEB","url":"https://github.com/0x676e67/vproxy/releases/tag/v2.4.0"},{"type":"ADVISORY","url":"https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54581.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54581"},{"type":"FIX","url":"https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/0x676e67/vproxy","events":[{"introduced":"0"},{"fixed":"aa1bf64c5e7f1c471395f9f29175ffc1b16a1079"},{"fixed":"4480237d96491304ebf2cac50bb5ad9820d1a3db"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.4.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.0.77","v2.0.65","v2.0.60","v2.0.55","v2.0.51","v2.0.50","v2.0.26","v2.0.25","v2.0.12","v2.0.11","v2.0.10","v2.0.5","v2.0.1","v2.0.0","v1.3.2","v1.3.1","v1.2.5","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.0","v0.3.8","v0.3.7","v0.3.6","v0.3.5","v0.3.3","v0.3.2","v0.3.1","v0.3.0","v0.2.2","v0.2.1","v0.2.0","v0.1.7","v0.1.6","v0.1.5","v0.1.4","v0.1.3","v0.1.2","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54581.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}