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CRLF Injection Affecting python2.7 package, versions <2.7.12-1ubuntu0~16.04.8

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Scope Changed

    Threat Intelligence

    EPSS 0.35% (72nd percentile)
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NVD
6.1 medium
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SUSE
5.4 medium
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Red Hat
6.5 medium

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  • Snyk ID SNYK-UBUNTU1604-PYTHON27-342983
  • published 13 Mar 2019
  • 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 Ubuntu:16.04 python2.7 to version 2.7.12-1ubuntu0~16.04.8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python2.7 package and not the python2.7 package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 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