Debian dla-3610 : python-urllib3 - security update

critical Nessus Plugin ID 182762

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3610 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-3610-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin October 08, 2023 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : python-urllib3 Version : 1.24.1-1+deb10u1 CVE ID : CVE-2019-11236 CVE-2019-11324 CVE-2020-26137 CVE-2023-43804 Debian Bug : 927172 927412 1053626

Security vulnerabilities were found in python-urllib3, an HTTP library with thread-safe connection pooling for Python, which could lead to information disclosure or authorization bypass.

CVE-2019-11236

Hanno Bck discovered that an attacker controlling the request parameter can inject headers by injecting CR/LF chars. The issue is similar to CPython's CVE-2019-9740.

CVE-2019-11324

Christian Heimes discovered that when verifying HTTPS connections upon passing an SSLContext to urllib3, system CA certificates are loaded into the SSLContext by default in addition to any manually-specified CA certificates.
This causes TLS handshakes that should fail given only the manually specified certs to succeed based on system CA certs.

CVE-2020-26137

It was discovered that CRLF injection was possible if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest().
The issue is similar to urllib's CVE-2020-26116.

CVE-2023-43804

It was discovered that the Cookie request header isn't stripped during cross-origin redirects. It is therefore possible for a user specifying a Cookie header to unknowingly leak information via HTTP redirects to a different origin (unless the user disables redirects explicitly). The issue is similar to CVE-2018-20060, but for Cookie request header rather than Authorization.

Moreover authorization request headers were not removed redirecting to cross-site. Per RFC7230 sec. 3.2 header fields are to be treated case-insensitively.

For Debian 10 buster, these problems have been fixed in version 1.24.1-1+deb10u1.

We recommend that you upgrade your python-urllib3 packages.

For the detailed security status of python-urllib3 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/python-urllib3

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the python-urllib3 packages.

Plugin Details

Severity: Critical

ID: 182762

File Name: debian_DLA-3610.nasl

Version: 1.2

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/8/2023

Updated: 1/22/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2020-26137

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

CVSS Score Source: CVE-2018-20060

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2023-43804

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:python-urllib3, p-cpe:/a:debian:debian_linux:python3-urllib3

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/8/2023

Vulnerability Publication Date: 3/26/2018

Reference Information

CVE: CVE-2018-20060, CVE-2019-11236, CVE-2019-11324, CVE-2019-9740, CVE-2020-26116, CVE-2020-26137, CVE-2023-43804

Detections

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