HOMEVULNERABILITIESCVE-2016-1000342
HIGH

CVE-2016-1000342

CWE-347Published: June 4, 2018· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2016-1000342 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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

bouncycastle1 product(s)
bc-java
Debian1 product(s)
debian linux
Source: NVD CPE · 2 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/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9
PATCHhttps://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2018/07/msg00009.html

All References (14)

→
https://access.redhat.com/errata/RHSA-2018:2669
→
https://access.redhat.com/errata/RHSA-2018:2927
→
https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/07/msg00009.htmlThird Party Advisory
→
https://security.netapp.com/advisory/ntap-20181127-0004/
→
https://usn.ubuntu.com/3727-1/
→
https://www.oracle.com/security-alerts/cpuoct2020.html
→
https://access.redhat.com/errata/RHSA-2018:2669
→
https://access.redhat.com/errata/RHSA-2018:2927
→
https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2018/07/msg00009.htmlThird Party Advisory
→
https://security.netapp.com/advisory/ntap-20181127-0004/
→
https://usn.ubuntu.com/3727-1/
→
https://www.oracle.com/security-alerts/cpuoct2020.html

Quick Facts

CVE IDCVE-2016-1000342
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-347
CISA KEVNo
Affected2 vendor(s)
PublishedJun 4, 2018

Related CVEs (CWE-347)

CVE-2026-56451
10.0
CVE-2026-48558
KEV10.0
CVE-2024-32962
10.0
CVE-2026-44748
9.9
CVE-2018-12356
9.8
CVE-2025-9485
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-1000342 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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