CVE-2018-5382

 

Published at: - 16-04-2018 04:29

Last modified: - 20-04-2022 05:31

Total changes: - 6

Description

The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where people need to create the files for legacy reasons a specific keystore type "BKS-V1" was introduced in 1.49. It should be noted that the use of "BKS-V1" is discouraged by the library authors and should only be used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity check is not going to cause a security issue in itself.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

 

Verification logic

 

Reference

• VU#306792-Third Party Advisory, US Government Resource
• https://www.bouncycastle.org/releasenotes.html
• 103453-Third Party Advisory, VDB Entry
• RHSA-2018:2927-Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2020.html

 

Keywords

NVD

 

CVE-2018-5382

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures