Debian DLA-2450-1 : libproxy security update

critical Nessus Plugin ID 142931


The remote Debian host is missing a security update.


Li Fei found that libproxy, a library for automatic proxy configuration management, was vulnerable to a buffer overflow vulnerability when receiving a large PAC file from a server without a Content-Length header in the response.

For Debian 9 stretch, this problem has been fixed in version 0.4.14-2+deb9u2.

We recommend that you upgrade your libproxy packages.

For the detailed security status of libproxy please refer to its security tracker page at:

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade the affected packages.

See Also

Plugin Details

Severity: Critical

ID: 142931

File Name: debian_DLA-2450.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/17/2020

Updated: 2/8/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2020-26154


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libproxy-cil-dev, p-cpe:/a:debian:debian_linux:libproxy-dev, p-cpe:/a:debian:debian_linux:libproxy-tools, p-cpe:/a:debian:debian_linux:libproxy0.4-cil, p-cpe:/a:debian:debian_linux:libproxy1-plugin-gsettings, p-cpe:/a:debian:debian_linux:libproxy1-plugin-kconfig, p-cpe:/a:debian:debian_linux:libproxy1-plugin-mozjs, p-cpe:/a:debian:debian_linux:libproxy1-plugin-networkmanager, p-cpe:/a:debian:debian_linux:libproxy1-plugin-webkit, p-cpe:/a:debian:debian_linux:libproxy1v5, p-cpe:/a:debian:debian_linux:python-libproxy, p-cpe:/a:debian:debian_linux:python3-libproxy, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/13/2020

Vulnerability Publication Date: 9/30/2020

Reference Information

CVE: CVE-2020-26154