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Bouncy Castle JCE Provider におけるデジタル署名の検証に関する脆弱性
Title Bouncy Castle JCE Provider におけるデジタル署名の検証に関する脆弱性
Summary

Bouncy Castle JCE Provider には、デジタル署名の検証に関する脆弱性が存在します。

Possible impacts 情報を改ざんされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date Oct. 15, 2016, midnight
Registration Date Aug. 6, 2018, 2:11 p.m.
Last Update Aug. 6, 2018, 2:11 p.m.
CVSS3.0 : 重要
Score 7.5
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS2.0 : 警告
Score 5
Vector AV:N/AC:L/Au:N/C:N/I:P/A:N
Affected System
Bouncy Castle
Bouncy Castle Java Cryptography API 1.55 およびそれ以前
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
1 [2018年08月06日]
  掲載		 Aug. 6, 2018, 2:11 p.m.
NVD Vulnerability Information
CVE-2016-1000338
Summary

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.

Publication Date June 2, 2018, 5:29 a.m.
Registration Date Jan. 26, 2021, 2:04 p.m.
Last Update Nov. 21, 2024, 11:43 a.m.
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:*:*:*:*:*:*:*:* 1.38 1.56
Configuration2 or higher or less more than less than
cpe:2.3:a:redhat:satellite_capsule:6.4:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:*:*:*:*
cpe:2.3:a:redhat:satellite:6.4:-:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:a:netapp:7-mode_transition_tool:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List