bcgit/bc-java · Security
In Bouncy Castle JCE Provider ECDSA does not fully validate ASN.1 encoding of signature on verification
- GHSA ID
- GHSA-qcj7-g2j5-g7r3
- CVE ID
- CVE-2016-1000342
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS v3
- 7.5 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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.
CWEs
- CWE-347 · Improper Verification of Cryptographic Signature
References
- https://nvd.nist.gov/vuln/detail/CVE-2016-1000342 ↗
- https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9 ↗
- https://access.redhat.com/errata/RHSA-2018:2669 ↗
- https://access.redhat.com/errata/RHSA-2018:2927 ↗
- https://lists.debian.org/debian-lts-announce/2018/07/msg00009.html ↗
- https://www.oracle.com/security-alerts/cpuoct2020.html ↗
- https://security.netapp.com/advisory/ntap-20181127-0004 ↗
- https://usn.ubuntu.com/3727-1 ↗
- https://github.com/advisories/GHSA-qcj7-g2j5-g7r3 ↗