High severity · published Jun 4, 2018
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
7.5
CVSS
1.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BC
Bc-java · Bouncycastle
through 1.55 · source: NVD
DL
Debian Linux · Debian
8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-1000342
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-1000342
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:2669
access.redhat.com
https://access.redhat.com/errata/RHSA-2018:2927
Patch
https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
security.netapp.com
https://security.netapp.com/advisory/ntap-20181127-0004/
usn.ubuntu.com
https://usn.ubuntu.com/3727-1/
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