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CVE-2019-18348

CVE information

Published

4 years ago

Last Modified

10 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

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Description

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..

CVSSv2.0 Score

Severity
Medium
Base Score
4.3/10
Exploit Score
8.6/10
Access Vector
Network
Access Complexity
Medium
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
Partial

CVSSv3.1 Score

Severity
Medium
Base Score
6.1/10
Exploit Score
2.8/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
2.7/10
Confidentiality Impact
Low
Availability Impact
None
Integrity Impact
Low
Scope
Changed
User Interaction
Required

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
2.0 -
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.8.0 3.8.3
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.0 3.5.10
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.6.0 3.6.11
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.7.0 3.7.8

References