Vulnerability in Bouncycastle Bc-Java
CVE-2016-1000342
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Bouncycastle Bc-Java
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.debian.org/debian-lts-announce/2018/07/msg00009.html (mailing-list, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2669 (vendor-advisory)
- usn.ubuntu.com/3727-1/ (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:2927 (vendor-advisory)
- www.oracle.com/security-alerts/cpuoct2020.html
- security.netapp.com/advisory/ntap-20181127-0004/
- github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-1000342?
- CVE-2016-1000342 is a high-severity vulnerability in Bouncycastle Bc-Java, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2018-06-04.
- How severe is CVE-2016-1000342?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-1000342 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.