CVE-2016-1000338

Published: 01 June 2018

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.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
bouncycastle
Launchpad, Ubuntu, Debian
Upstream
Released (1.56-1)
Ubuntu 21.10 (Impish Indri) Not vulnerable
(1.60-1)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(1.60-1)
Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable
(1.60-1)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(1.59-1)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end of standard support, was needed)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [1.49+dfsg-2ubuntu0.1])
Patches:
Upstream: https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f