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CVE-2020-25212

CVE information

Published

3 years ago

Last Modified

1 year ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

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Description

A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452..

CVSSv2.0 Score

Severity
Medium
Base Score
4.4/10
Exploit Score
3.4/10
Access Vector
Local
Access Complexity
Medium
Authentication Required
None
Impact Score
6.4/10
Confidentiality Impact
Partial
Availability Impact
Partial
Integrity Impact
Partial

CVSSv3.1 Score

Severity
High
Base Score
7/10
Exploit Score
1/10
Access Vector
Local
Access Complexity
High
Privileges Required
Low
Impact Score
5.9/10
Confidentiality Impact
High
Availability Impact
High
Integrity Impact
High
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
- 5.8.3
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
  Yes
- -

References