What’s Vulnerable › Vulnerabilities

CVE-2020-25219

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-09-09 · updated 2026-06-17
• Weakness: CWE-674

Description

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: 16.04, 18.04, 20.04
• Debian Linux: 9.0, 10.0
• Fedoraproject Fedora: 31, 32, 33
• Libproxy Project Libproxy: from 0.4.0 through 0.4.15
• openSUSE Leap: 15.1, 15.2

References

• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.html
• https://github.com/libproxy/libproxy/issues/134
• https://lists.debian.org/debian-lts-announce/2020/09/msg00012.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNID6EZVOVH7EZB7KFU2EON54CFDIVUR/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JF5JSONJNO64ARWRVOS6K6HSIPHEF3H2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SSVZAAVHBJR3Z4MZNR55QW3OQFAS2STH/
• https://usn.ubuntu.com/4514-1/
• https://www.debian.org/security/2020/dsa-4800
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.html
• https://github.com/libproxy/libproxy/issues/134

Get alerted when CVE-2020-25219 or the next vulnerability affects your stack