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Debian DLA-1519-1 : python2.7 security update

critical Nessus Plugin ID 117712

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Synopsis

The remote Debian host is missing a security update.

Description

Multiple vulnerabilities were found in the CPython interpreter which can cause denial of service, information gain, and arbitrary code execution.

CVE-2017-1000158

CPython (aka Python) is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)

CVE-2018-1060

python is vulnerable to catastrophic backtracking in pop3lib's apop() method. An attacker could use this flaw to cause denial of service.

CVE-2018-1061

python is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service.

CVE-2018-1000802

Python Software Foundation Python (CPython) version 2.7 contains a CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in shutil module (make_archive function) that can result in Denial of service, Information gain via injection of arbitrary files on the system or entire drive. This attack appear to be exploitable via Passage of unfiltered user input to the function.

For Debian 8 'Jessie', these problems have been fixed in version 2.7.9-2+deb8u2.

We recommend that you upgrade your python2.7 packages.

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.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html

https://packages.debian.org/source/jessie/python2.7

Plugin Details

Severity: Critical

ID: 117712

File Name: debian_DLA-1519.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/27/2018

Updated: 8/5/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2018-1000802

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

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, 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, cpe:/o:debian:debian_linux:8.0, 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: 9/25/2018

Reference Information

CVE: CVE-2017-1000158, CVE-2018-1000802, CVE-2018-1060, CVE-2018-1061