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CRLF Injection Affecting python2.7 package, versions <2.7.13-2+deb9u4

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Scope Changed
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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-DEBIAN9-PYTHON27-341380
  • published 23 Mar 2019
  • disclosed 23 Mar 2019
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Introduced: 23 Mar 2019

CVE-2019-9947 Open this link in a new tab
CWE-93 Open this link in a new tab

How to fix?

Upgrade Debian:9 python2.7 to version 2.7.13-2+deb9u4 or higher.

NVD Description

Note: Versions mentioned in the description apply to the upstream python2.7 package. See How to fix? for Debian:9 relevant versions.

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 path component of a URL that lacks a ? character) followed by an HTTP header or a Redis command. This is similar to the CVE-2019-9740 query string issue. 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.