CVE-2020-25219: Canonical Ubuntu Linux

High severity, CVSS 7.5. EPSS: 4.4% chance of exploitation in the next 30 days.

url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 20.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 31 only; version 32 only; version 33 only
• Libproxy Project Libproxy: from 0.4.0, up to and including 0.4.15
• Opensuse Leap: version 15.1 only; version 15.2 only

Published 2020-09-09. Last modified 2026-06-17.