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[email protected]CVE-2016-1000338

HistoryJun 01, 2018 - 8:29 p.m.

CVE-2016-1000338

2018-06-0120:29:00

CWE-347

[email protected]

web.nvd.nist.gov

bouncy castle

jce provider

dsa

asn.1 encoding

signature validation

cve-2016-1000338

nvd

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

7.2 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

0.004 Low

EPSS

Percentile

72.0%

JSON

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.

CPENameOperatorVersion
bouncycastle:legion-of-the-bouncy-castle-java-crytography-apibouncycastle legion-of-the-bouncy-castle-java-crytography-apile1.55