Bouncy Castle JCE Provider up to 1.55 DSA Key Generator cryptographic issue

Summaryinfo

A vulnerability was found in Bouncy Castle JCE Provider up to 1.55. It has been declared as critical. This affects an unknown part of the component DSA Key Generator. The manipulation results in cryptographic issue. This vulnerability is cataloged as CVE-2016-1000343. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Bouncy Castle JCE Provider up to 1.55. It has been classified as critical. Affected is some unknown processing of the component DSA Key Generator. The manipulation with an unknown input leads to a cryptographic issue vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Bouncy Castle JCE Provider version 1.55 and earlier the DSA key pair generator generates a weak private key if used with default values. If the JCA key pair generator is not explicitly initialised with DSA parameters, 1.55 and earlier generates a private value assuming a 1024 bit key size. In earlier releases this can be dealt with by explicitly passing parameters to the key pair generator.

The bug was discovered 07/07/2018. The weakness was shared 06/04/2018 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2016-1000343 since 06/04/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 110948 (Debian DLA-1418-1 : bouncycastle security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171315 (OpenSUSE Security Update for bouncycastle (openSUSE-SU-2018:1689-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110948) and EUVD (EUVD-2018-0689). The entries VDB-118491, VDB-118820, VDB-118821 and VDB-118822 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Bouncy Castle

Name

• JCE Provider

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40
• 1.41
• 1.42
• 1.43
• 1.44
• 1.45
• 1.46
• 1.47
• 1.48
• 1.49
• 1.50
• 1.51
• 1.52
• 1.53
• 1.54
• 1.55

License

• open-source

CPE 2.3info

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CPE 2.2info

• 🔍
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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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