CVE-2025-54581 (GCVE-0-2025-54581)

Vulnerability from cvelistv5 – Published: 2025-07-30 19:57 – Updated: 2025-07-30 20:23
VLAI
Title
vproxy is vulnerable to a divide by zero DoS attack
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-30 20:13 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7609 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
0x676e67 vproxy Affected: < 2.4.0
guessed Create a notification for this product.
Show details on NVD website
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