Arbitrary Code Injection Affecting python2.7 package, versions <2.7.18~rc1-1


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.45% (76th percentile)

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  • Snyk IDSNYK-DEBIAN11-PYTHON27-523811
  • published25 Oct 2019
  • disclosed23 Oct 2019

Introduced: 23 Oct 2019

CVE-2019-18348  (opens in a new tab)
CWE-74  (opens in a new tab)

How to fix?

Upgrade Debian:11 python2.7 to version 2.7.18~rc1-1 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 Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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 the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.

References

CVSS Scores

version 3.1