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Ubuntu: USN-3727-1 (CVE-2016-1000338): Bouncy Castle vulnerabilities

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Ubuntu: USN-3727-1 (CVE-2016-1000338): Bouncy Castle vulnerabilities

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
06/01/2018
Created
03/19/2019
Added
08/08/2018
Modified
05/03/2019

Description

In Bouncy Castle JCE Provider version 1.55 and earlier the DSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure.

Solution(s)

  • ubuntu-upgrade-libbcmail-java
  • ubuntu-upgrade-libbcpg-java
  • ubuntu-upgrade-libbcpkix-java
  • ubuntu-upgrade-libbcprov-java

References

  • USN-3727-1
  • RHSA-2018:2669
  • RHSA-2018:2927
  • CVE-2016-1000338

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