<p>Upgrade <code>Amazon-Linux:2</code> <code>python3-tools</code> to version 0:3.7.3-1.amzn2.0.2 or higher.<br>This issue was patched in <code>ALAS2-2019-1247</code>.</p>

CRLF Injection Affecting python3-tools package, versions <0:3.7.3-1.amzn2.0.2

Threat Intelligence

0.33% (72^nd percentile)

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Snyk ID SNYK-AMZN2-PYTHON3TOOLS-1671311
published 27 Sep 2021
disclosed 13 Mar 2019

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Introduced: 13 Mar 2019

CVE-2019-9740 Open this link in a new tab CWE-93 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 python3-tools to version 0:3.7.3-1.amzn2.0.2 or higher.
This issue was patched in ALAS2-2019-1247.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-tools package and not the python3-tools package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. 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 query string after a ? character) followed by an HTTP header or a Redis command. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

Required

Scope (S)

Changed

Confidentiality (C)

Low
Integrity (I)

Low
Availability (A)

None