7.5

CVE-2016-1000342: bouncycastle bc-java

Modified
AliasesUBUNTU-CVE-2016-1000342DEBIAN-CVE-2016-1000342CGA-27rw-q4c2-2p7r
Published 04-06-2018Last modified 06-08-2024

Vulnerability summary

CVE-2016-1000342 is a high (CVSS 7.5) vulnerability in bouncycastle bc-java. EPSS estimates a 1.83% chance of exploitation in the next 30 days, higher than 78.8% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
1.83%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 5 · Related 2
DLA-1418-1MGASA-2018-0376OPENSUSE-SU-2024:10661-1RHSA-2018:2927USN-3727-1

Timeline

  1. 04-06-2018
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability 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

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.83%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 1.80% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard34 products
  • eco-java-gradle-1.11All versions (No fix recorded)
  • eco-java-gradle-2.0All versions (No fix recorded)
  • eco-java-gradle-2.1All versions (No fix recorded)
  • eco-java-gradle-2.10All versions (No fix recorded)
  • eco-java-gradle-2.11All versions (No fix recorded)
Org.bouncycastle3 products
  • bcprov-jdk14< 1.56
  • bcprov-jdk15< 1.56
  • bcprov-jdk15on< 1.56
Debian2 products
Bouncycastle1 product
Ubuntu1 product
  • bouncycastle< 1.49+dfsg-2ubuntu0.1 | All versions (No fix recorded)

5 vendors · 41 products

References

15 links
Show all 15 references