CVE-2016-1000338

Name: CVE-2016-1000338
Creator: NVD / NIST
Published: 2018-06-01T20:29:00.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.85%

Last modified Jun 17, 2026

CVE-2016-1000338 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.85% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.85%

76.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-347

Affected Software

Vendor	Product	Versions
Bouncycastle	Legion-Of-The-Bouncy-Castle-Java-Crytography-Api	>= 1.38, < 1.56
Redhat	Satellite	6.4
Redhat	Satellite Capsule	6.4
Canonical	Ubuntu Linux	14.04
Netapp	7-Mode Transition Tool	All versions

References

https://access.redhat.com/errata/RHSA-2018:2669Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2927Third Party Advisory
https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f#diff-3679f5a9d2b939d0d3ee1601a7774fb0Patch, Third Party Advisory
https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3EThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00009.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20231006-0011/Third Party Advisory
https://usn.ubuntu.com/3727-1/Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory
https://access.redhat.com/errata/RHSA-2018:2669Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2927Third Party Advisory
https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f#diff-3679f5a9d2b939d0d3ee1601a7774fb0Patch, Third Party Advisory
https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3EThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00009.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20231006-0011/Third Party Advisory
https://usn.ubuntu.com/3727-1/Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.htmlThird Party Advisory

Timeline

Published: Jun 1, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-1000338?

How severe is CVE-2016-1000338?

CVE-2016-1000338 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.85% probability of exploitation in the next 30 days.

How do I fix CVE-2016-1000338?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST