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CVE-2021-23336

CVE information

Published

3 years ago

Last Modified

5 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

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Description

The package python/cpython from 0 and before 3.6.13, from 3.7.0 and before 3.7.10, from 3.8.0 and before 3.8.8, from 3.9.0 and before 3.9.2 are vulnerable to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. When the attacker can separate query parameters using a semicolon (;), they can cause a difference in the interpretation of the request between the proxy (running with default configuration) and the server. This can result in malicious requests being cached as completely safe ones, as the proxy would usually not see the semicolon as a separator, and therefore would not include it in a cache key of an unkeyed parameter..

CVSSv2.0 Score

Severity
Medium
Base Score
4/10
Exploit Score
4.9/10
Access Vector
Network
Access Complexity
High
Authentication Required
None
Impact Score
4.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
Partial

CVSSv3.1 Score

Severity
Medium
Base Score
5.9/10
Exploit Score
1.6/10
Access Vector
Network
Access Complexity
High
Privileges Required
None
Impact Score
4.2/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
Low
Scope
Unchanged
User Interaction
Required

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.9.0 3.9.2
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.8.0 3.8.8
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
3.7.0 3.7.10
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
  Yes
- 3.6.13
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:
  Yes
- -
cpe:2.3:a:netapp:inventory_collect_tool:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
  Yes
3.1 3.1.7
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
  Yes
3.0 3.0.13
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
  Yes
2.2 2.2.19
cpe:2.3:o:oracle:zfs_storage_appliance:8.8:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:
  Yes
- -
cpe:2.3:a:oracle:communications_offline_mediation_controller
  Yes
- -
cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0
  Yes
- -

References