Debian DLA-2456-1 : python3.5 security update

high Nessus Plugin ID 143104


The remote Debian host is missing a security update.


Multiple security issues were discovered in Python.


In Lib/, an attacker is able to craft a TAR archive leading to an infinite loop when opened by, because _proc_pax lacks header validation


http.client allows CRLF injection if the attacker controls the HTTP request method

For Debian 9 stretch, these problems have been fixed in version 3.5.3-1+deb9u3.

We recommend that you upgrade your python3.5 packages.

For the detailed security status of python3.5 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: High

ID: 143104

File Name: debian_DLA-2456.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/19/2020

Updated: 2/8/2024

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

Risk Information


Risk Factor: Low

Score: 3.8


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-2020-26116


Risk Factor: High

Base Score: 7.2

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:idle-python3.5, p-cpe:/a:debian:debian_linux:libpython3.5, p-cpe:/a:debian:debian_linux:libpython3.5-dbg, p-cpe:/a:debian:debian_linux:libpython3.5-dev, p-cpe:/a:debian:debian_linux:libpython3.5-minimal, p-cpe:/a:debian:debian_linux:libpython3.5-stdlib, p-cpe:/a:debian:debian_linux:libpython3.5-testsuite, p-cpe:/a:debian:debian_linux:python3.5, p-cpe:/a:debian:debian_linux:python3.5-dbg, p-cpe:/a:debian:debian_linux:python3.5-dev, p-cpe:/a:debian:debian_linux:python3.5-doc, p-cpe:/a:debian:debian_linux:python3.5-examples, p-cpe:/a:debian:debian_linux:python3.5-minimal, p-cpe:/a:debian:debian_linux:python3.5-venv, cpe:/o:debian:debian_linux:9.0

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: 11/18/2020

Vulnerability Publication Date: 7/13/2020

Reference Information

CVE: CVE-2019-20907, CVE-2020-26116