CVE-2016-1000338

mediumpriority · track · 31EPSS 0.018 · 78 %ileEUFRUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.79% (78th) EPSS

CVSS 5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-347USprimaryCWE-347US

affected products (9)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
bouncycastle legion-of-the-bouncy-castle-java-crytography-api1.38 → 1.56nvdUScpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:*:*:*:*:*:*:*:*
canonical ubuntu linux= 14.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
netapp 7-mode transition toolall versionsnvdUScpe:2.3:a:netapp:7-mode_transition_tool:*:*:*:*:*:*:*:*
redhat satellite= 6.4nvdUScpe:2.3:a:redhat:satellite:*:*:*:*:*:*:*:*
redhat satellite capsule= 6.4nvdUScpe:2.3:a:redhat:satellite_capsule:*:*:*:*:*:*:*:*
Maven org.bouncycastle:bcprov-jdk141.38 → 1.56osvUSpkg:maven/org.bouncycastle/bcprov-jdk14
Maven org.bouncycastle:bcprov-jdk151.38 → 1.56osvUSpkg:maven/org.bouncycastle/bcprov-jdk15
Maven org.bouncycastle:bcprov-jdk15on1.38 → 1.56osvUSpkg:maven/org.bouncycastle/bcprov-jdk15on

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-4vhj-98r6-424hIn Bouncy Castle JCE Provider it is possible to inject extra elements in the sequence making up the signature and still have it validate2018-10-17ghsa · osvUS
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.
CERTFR-2026-AVI-1336Multiples vulnérabilités dans les produits IBMFrançais2026-10-16vendor · certfrFR

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv certfr NVD CVE.org MITRE

published 2018-06-01modified 2026-06-17

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references (32)

External citations — patches, advisories, analysis.

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