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CVE-2016-1000338

Published: 1 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 Severity Score

7.5

Score breakdown

Status

Package Release Status
bouncycastle
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1.57-1)
bionic Not vulnerable
(1.59-1)
cosmic Not vulnerable
(1.60-1)
disco Not vulnerable
(1.60-1)
eoan Not vulnerable
(1.60-1)
focal Not vulnerable
(1.60-1)
groovy Not vulnerable
(1.60-1)
hirsute Not vulnerable
(1.60-1)
impish Not vulnerable
(1.60-1)
jammy Not vulnerable
(1.60-1)
kinetic Not vulnerable
(1.60-1)
lunar Not vulnerable
(1.60-1)
trusty
Released (1.49+dfsg-2ubuntu0.1)
upstream
Released (1.56-1)
xenial Needed

mantic Not vulnerable
(1.60-1)
Patches:
upstream: https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N