CVE-2025-54581 Information

Jul 31, 2025 cve

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.

Reference

https://github.com/0x676e67/vproxy/commit/aa1bf64c5e7f1c471395f9f29175ffc1b16a1079 https://github.com/0x676e67/vproxy/releases/tag/v2.4.0 https://github.com/0x676e67/vproxy/security/advisories/GHSA-7h24-c332-p48c

CNNVD-202507-3816 (Published: 2025-07-30)

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