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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWM4eGYtbTRmZi1qY3hq

Moderate severity vulnerability that affects org.bouncycastle:bcprov-jdk14 and org.bouncycastle:bcprov-jdk15

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.

Permalink: https://github.com/advisories/GHSA-c8xf-m4ff-jcxj
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWM4eGYtbTRmZi1qY3hq
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 6 years ago
Updated: almost 2 years ago

CVSS Score: 5.3
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Percentage: 0.00281
EPSS Percentile: 0.68067

Identifiers: GHSA-c8xf-m4ff-jcxj, CVE-2016-1000339
References:

Repository: https://github.com/bcgit/bc-java
Blast Radius: 15.9

Affected Packages

maven:org.bouncycastle:bcprov-jdk15

Dependent packages: 104
Dependent repositories: 985
Downloads:
Affected Version Ranges: < 1.56
Fixed in: 1.56
All affected versions:
All unaffected versions:

maven:org.bouncycastle:bcprov-jdk14

Dependent packages: 33
Dependent repositories: 201
Downloads:
Affected Version Ranges: < 1.56
Fixed in: 1.56
All affected versions:
All unaffected versions: 1.78.1