CVE-2016-1000342

Aliases:GHSA-qcj7-g2j5-g7r3
Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 04 Jun 2018, 13:00
Last modified:06 Aug 2024, 03:55

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
0.47% LOW
0% probability +0.18%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Jun 2018, 13:00
Published
Vulnerability first disclosed
06 Aug 2024, 03:55
Last Modified
Vulnerability information updated

Description

In the Bouncy Castle JCE Provider version 1.55 and earlier ECDSA 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.

CVSS Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.47%• Percentile: 65%

Techniques & Countermeasures

  • CWE-347•Improper Verification of Cryptographic Signature

    The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Affected Systems

  • bouncycastle•bc-java

    ≤ 1.55

  • debian•debian_linux

    8.0

  • org.bouncycastle•bcprov-jdk14

    < 1.56

  • org.bouncycastle•bcprov-jdk15

    < 1.56

  • org.bouncycastle•bcprov-jdk15on

    < 1.56

References (11)