HOMEVULNERABILITIESCVE-2016-1000338
HIGH

CVE-2016-1000338

CWE-347Published: June 1, 2018· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2016-1000338 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

bouncycastle1 product(s)
legion-of-the-bouncy-castle-java-crytography-api
Canonical1 product(s)
ubuntu linux
netapp1 product(s)
7-mode transition tool
Red Hat2 product(s)
satellitesatellite capsule
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f#diff-3679f5a9d2b939d0d3ee1601a7774fb0
PATCHhttps://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f#diff-3679f5a9d2b939d0d3ee1601a7774fb0
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:2669
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:2927
ADVISORYhttps://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20231006-0011/
ADVISORYhttps://usn.ubuntu.com/3727-1/
ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2020.html
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:2669
ADVISORYhttps://access.redhat.com/errata/RHSA-2018:2927
ADVISORYhttps://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20231006-0011/
ADVISORYhttps://usn.ubuntu.com/3727-1/
ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2020.html

All References (16)

→
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

Quick Facts

CVE IDCVE-2016-1000338
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-347
CISA KEVNo
Affected4 vendor(s)
PublishedJun 1, 2018

Related CVEs (CWE-347)

CVE-2026-48558
KEV10.0
CVE-2026-56451
10.0
CVE-2024-32962
10.0
CVE-2026-44748
9.9
CVE-2026-28802
9.8
CVE-2026-32974
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-1000338 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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