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CVE-2019-18348

CVE information

Published

4 years ago

Last Modified

8 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

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