CVE-2016-1000339

Aliases:GHSA-c8xf-m4ff-jcxj
Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 04 Jun 2018, 13:00
Last modified:06 Aug 2024, 03:55

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
v3.0 (nvd)
EPSS Score
1.12% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Jun 2018, 13:00
Published
Vulnerability first disclosed
06 Aug 2024, 03:55
Last Modified
Vulnerability information updated

Description

In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 1.12%• Percentile: 79%

Techniques & Countermeasures

  • CWE-310•Cryptographic Issues

    Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed.

Affected Systems

  • bouncycastle•bc-java

    ≤ 1.55

  • debian•debian_linux

    8.0

  • org.bouncycastle•bcprov-jdk14

    < 1.56

  • org.bouncycastle•bcprov-jdk15

    < 1.56

  • org.bouncycastle•bcprov-jdk15on

    < 1.56

References (12)