Tinyproxy Project
Monthly
HTTP request smuggling and denial of service in Tinyproxy through 1.11.3 allows unauthenticated remote attackers to cause backend worker exhaustion and bypass request inspection controls. The vulnerability stems from case-sensitive Transfer-Encoding header parsing that violates RFC 7230, enabling attackers to send 'Transfer-Encoding: Chunked' (capitalized) to desynchronize Tinyproxy's request state from RFC-compliant backends like Node.js and Nginx. No public exploit identified at time of analysis, though EPSS data not available and technical details are publicly documented in GitHub issue #604. Authentication requirements not confirmed from available data, but CVSS vector indicates network-accessible attack requiring no privileges.
Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Improper Privilege Management vulnerability could allow attackers to escalate privileges to gain unauthorized elevated access.
HTTP request smuggling and denial of service in Tinyproxy through 1.11.3 allows unauthenticated remote attackers to cause backend worker exhaustion and bypass request inspection controls. The vulnerability stems from case-sensitive Transfer-Encoding header parsing that violates RFC 7230, enabling attackers to send 'Transfer-Encoding: Chunked' (capitalized) to desynchronize Tinyproxy's request state from RFC-compliant backends like Node.js and Nginx. No public exploit identified at time of analysis, though EPSS data not available and technical details are publicly documented in GitHub issue #604. Authentication requirements not confirmed from available data, but CVSS vector indicates network-accessible attack requiring no privileges.
Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Improper Privilege Management vulnerability could allow attackers to escalate privileges to gain unauthorized elevated access.