CVE-2020-25219

Name: CVE-2020-25219
Creator: NVD / NIST
Published: 2020-09-09T21:15:11.117+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.28%

Last modified Jun 17, 2026

CVE-2020-25219 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 4.28% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

4.28%

89.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-674

Affected Software

Vendor	Product	Versions
Libproxy Project	Libproxy	>= 0.4.0, <= 0.4.15
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Opensuse	Leap	15.1
Opensuse	Leap	15.2
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.htmlMailing List, Third Party Advisory
https://github.com/libproxy/libproxy/issues/134Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00012.htmlThird Party Advisory
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/Third Party Advisory
https://www.debian.org/security/2020/dsa-4800Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.htmlMailing List, Third Party Advisory
https://github.com/libproxy/libproxy/issues/134Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00012.htmlThird Party Advisory
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/Third Party Advisory
https://www.debian.org/security/2020/dsa-4800Third Party Advisory

Timeline

Published: Sep 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25219?

How severe is CVE-2020-25219?

CVE-2020-25219 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.28% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25219?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25219?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST