CVE & CISA-KEV Catalog

CVE-2016-1000342

HIGHEPSS 75th pctl
7.5
CVSS v3
NVD

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.

CWE-347

How to fix

Remediation Available
bouncycastleDebian
Fixed in:1.56-1CVE-2016-1000342
Fixed in:1.56-1CVE-2016-1000342
Fixed in:1.56-1CVE-2016-1000342
Fixed in:1.56-1CVE-2016-1000342
bouncycastleUbuntu
Fixed in:1.49+dfsg-2ubuntu0.1USN-3727-1
libbcmail-javaUbuntu
Fixed in:1.49+dfsg-2ubuntu0.1USN-3727-1
libbcpg-javaUbuntu
Fixed in:1.49+dfsg-2ubuntu0.1USN-3727-1
libbcpkix-javaUbuntu
Fixed in:1.49+dfsg-2ubuntu0.1USN-3727-1
libbcprov-javaUbuntu
Fixed in:1.49+dfsg-2ubuntu0.1USN-3727-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

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

Exploit Intelligence

1.78%probability of exploitation in 30 days
75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Third-Party Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-12.