Cryptographic issues in Bouncy Castle for Java - CVE-2016-1000340
Published: July 5, 2018
Vulnerability identifier: #VU13588
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-1000340
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists in Bouncy Castle JCE Provider due to buggy implementation of squaring for several raw math classes have been fixed (org.bouncycastle.math.raw.Nat???). These classes are used by our custom elliptic curve implementations (org.bouncycastle.math.ec.custom.**), so there was the possibility of rare (in general usage) spurious calculations for elliptic curve scalar multiplications. Such errors would have been detected with high probability by the output validation for our scalar multipliers.
Affected software
Bouncy Castle for Java
Dell Secure Connect Gateway
IBM Cloud Application Performance Management (APM)
IBM Sterling File Gateway
Fuse
Dell Secure Connect Gateway
IBM Cloud Application Performance Management (APM)
IBM Sterling File Gateway
Fuse
How to mitigate CVE-2016-1000340
Install updates from vendor's website.
Dell Secure Connect Gateway - update to 5.26.00.18
IBM Sterling File Gateway - addressed in versions 6.0.3.7, 6.1.0.5, 6.1.1.2, 6.1.2.0
Fuse - update to 7.1.0
IBM Cloud Application Performance Management (APM) - update to 8.1.4.0.14
IBM Sterling File Gateway - addressed in versions 6.0.3.7, 6.1.0.5, 6.1.1.2, 6.1.2.0
Fuse - update to 7.1.0
IBM Cloud Application Performance Management (APM) - update to 8.1.4.0.14