CVE Vulnerabilities

CVE-2020-25219

Uncontrolled Recursion

Published: Sep 09, 2020 | Modified: Nov 07, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

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.

Weakness

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Affected Software

Name Vendor Start Version End Version
Libproxy Libproxy_project 0.4.0 (including) 0.4.15 (including)
Red Hat Enterprise Linux 8.8 Extended Update Support RedHat libproxy-0:0.4.15-5.4.el8_8 *
Libproxy Ubuntu bionic *
Libproxy Ubuntu devel *
Libproxy Ubuntu focal *
Libproxy Ubuntu trusty *
Libproxy Ubuntu xenial *

Potential Mitigations

References