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Debian DLA-3456-1 : requests - LTS security update

medium Nessus Plugin ID 177421

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3456 advisory.

 - Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to destination servers when redirected to an HTTPS endpoint. This is a product of how we use `rebuild_proxies` to reattach the `Proxy-Authorization` header to requests. For HTTP connections sent through the tunnel, the proxy will identify the header in the request itself and remove it prior to forwarding to the destination server. However when sent over HTTPS, the `Proxy-Authorization` header must be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.
 (CVE-2023-32681)

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

Solution

Upgrade the requests packages.

For Debian 10 buster, this problem has been fixed in version 2.21.0-1+deb10u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1036693

https://security-tracker.debian.org/tracker/source-package/requests

https://www.debian.org/lts/security/2023/dla-3456

https://security-tracker.debian.org/tracker/CVE-2023-32681

https://packages.debian.org/source/buster/requests

Plugin Details

Severity: Medium

ID: 177421

File Name: debian_DLA-3456.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/18/2023

Updated: 9/26/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

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

CVSS Score Source: CVE-2023-32681

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:requests, cpe:/o:debian:debian_linux:10.0

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: 6/18/2023

Vulnerability Publication Date: 5/22/2023

Reference Information

CVE: CVE-2023-32681