CVEvulnerability
CVE-2018-5382
4.4 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-04-16
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CVSS 2.0 ([email protected])
- 3.6 LOW — AV:L/AC:L/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-327, CWE-354
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.
Affected configurations
• bouncycastle bc-java (<= 1.49)
• redhat satellite 6.4
• redhat satellite capsule 6.4
Related
References
- http://www.securityfocus.com/bid/103453 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2927 Third Party Advisory
- https://www.bouncycastle.org/releasenotes.html Release Notes, Vendor Advisory
- https://www.kb.cert.org/vuls/id/306792 Third Party Advisory, US Government Resource
- https://www.oracle.com/security-alerts/cpuoct2020.html Third Party Advisory
- http://www.securityfocus.com/bid/103453 Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2927 Third Party Advisory
- https://www.bouncycastle.org/releasenotes.html Release Notes, Vendor Advisory
- https://www.kb.cert.org/vuls/id/306792 Third Party Advisory, US Government Resource
- https://www.oracle.com/security-alerts/cpuoct2020.html Third Party Advisory