Detections
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Amazon Linux AMI : python36 (ALAS-2020-1428)
medium Nessus Plugin ID 140087
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Synopsis
The remote Amazon Linux AMI host is missing a security update.Description
The version of python36 installed on the remote host is prior to 3.6.11-1.18. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1428 advisory.In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation. (CVE-2019-20907)
An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0.
CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to theCVE-2019-9740query string issue and theCVE-2019-9947path string issue. (This is not exploitable when glibc hasCVE-2016-10739fixed.) A CRLF injection flaw was discovered in python in the way URLs are handled when doing an HTTP/HTTPS connection (e.g. through urlopen() or HTTPConnection).
An attacker who can control the url parameter passed to urlopen method in the urllib/urllib2 modules can inject CRLF sequences and HTTP headers by abusing the host part of the URL. (CVE-2019-18348)
Tenable has extracted the preceding description block directly from the tested product 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
Run 'yum update python36' to update your system.See Also
https://alas.aws.amazon.com/ALAS-2020-1428.html
Plugin Details
Severity: Medium
ID: 140087
File Name: ala_ALAS-2020-1428.nasl
Version: 1.6
Type: local
Agent: unix
Published: 8/31/2020
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2019-18348
CVSS v3
Risk Factor: Medium
Base Score: 6.1
Temporal Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:python36-debuginfo, p-cpe:/a:amazon:linux:python36-debug, p-cpe:/a:amazon:linux:python36-devel, p-cpe:/a:amazon:linux:python36-tools, p-cpe:/a:amazon:linux:python36-libs, p-cpe:/a:amazon:linux:python36-test, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:python36
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 8/27/2020
Vulnerability Publication Date: 1/21/2019
Reference Information
CVE: CVE-2019-18348, CVE-2019-20907
ALAS: 2020-1428
IAVA: 2020-A-0340-S