Debian dla-3575 : idle-python2.7 - security update

critical Nessus Plugin ID 181697

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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-3575 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-3575-1 [email protected] https://www.debian.org/lts/security/ Helmut Grohne September 20, 2023 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : python2.7 Version : 2.7.16-2+deb10u3 CVE ID : CVE-2021-23336 CVE-2022-0391 CVE-2022-48560 CVE-2022-48565 CVE-2022-48566 CVE-2023-24329 CVE-2023-40217

This update fixes multiple vulnerabilities concerning the urlparse module as well as vulnerabilities concerning the heapq, hmac, plistlib and ssl modules.

CVE-2021-23336

Python was vulnerable to Web Cache Poisoning via urlparse.parse_qsl and urlparse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter.

CVE-2022-0391

The urlparse module helps break Uniform Resource Locator (URL) strings into components. The issue involves how the urlparse method does not sanitize input and allows characters like '\r' and '\n' in the URL path. This flaw allows an attacker to input a crafted URL, leading to injection attacks.

CVE-2022-48560

A use-after-free exists in Python via heappushpop in heapq.

CVE-2022-48565

An XML External Entity (XXE) issue was discovered in Python. The plistlib module no longer accepts entity declarations in XML plist files to avoid XML vulnerabilities.

CVE-2022-48566

An issue was discovered in compare_digest in Lib/hmac.py in Python.
Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest.

CVE-2023-24329

An issue in the urlparse component of Python allows attackers to bypass blocklisting methods by supplying a URL that starts with blank characters.

CVE-2023-40217

The issue primarily affects servers written in Python (such as HTTP servers) that use TLS client authentication. If a TLS server-side socket is created, receives data into the socket buffer, and then is closed quickly, there is a brief window where the SSLSocket instance will detect the socket as not connected and won't initiate a handshake, but buffered data will still be readable from the socket buffer. This data will not be authenticated if the server-side TLS peer is expecting client certificate authentication, and is indistinguishable from valid TLS stream data. Data is limited in size to the amount that will fit in the buffer. (The TLS connection cannot directly be used for data exfiltration because the vulnerable code path requires that the connection be closed on initialization of the SSLSocket.)

For Debian 10 buster, these problems have been fixed in version 2.7.16-2+deb10u3.

We recommend that you upgrade your python2.7 packages.

For the detailed security status of python2.7 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/python2.7

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 idle-python2.7 packages.

Plugin Details

Severity: Critical

ID: 181697

File Name: debian_DLA-3575.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/20/2023

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: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2022-0391

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-2022-48565

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-2023-40217

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python2.7-minimal, p-cpe:/a:debian:debian_linux:libpython2.7-minimal, p-cpe:/a:debian:debian_linux:python2.7-dev, p-cpe:/a:debian:debian_linux:libpython2.7, p-cpe:/a:debian:debian_linux:python2.7, p-cpe:/a:debian:debian_linux:libpython2.7-dev, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libpython2.7-dbg, p-cpe:/a:debian:debian_linux:python2.7-doc, p-cpe:/a:debian:debian_linux:python2.7-dbg, p-cpe:/a:debian:debian_linux:libpython2.7-testsuite, p-cpe:/a:debian:debian_linux:libpython2.7-stdlib, p-cpe:/a:debian:debian_linux:python2.7-examples, p-cpe:/a:debian:debian_linux:idle-python2.7

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: 9/20/2023

Vulnerability Publication Date: 2/15/2021

Reference Information

CVE: CVE-2021-23336, CVE-2022-0391, CVE-2022-48560, CVE-2022-48565, CVE-2022-48566, CVE-2023-24329, CVE-2023-40217

Detections

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