Medium severity · published Mar 3, 2017
CVE-2016-6882
MatrixSSL before 3.8.7, when the DHE_RSA based cipher suite is supported, makes it easier for remote attackers to obtain RSA private key information by conducting a Lenstra…
5.9
CVSS
1.3%
EPSS
No
On KEV
Description
MatrixSSL before 3.8.7, when the DHE_RSA based cipher suite is supported, makes it easier for remote attackers to obtain RSA private key information by conducting a Lenstra side-channel attack.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Matrixssl · Matrixssl
through 3.8.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6882
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6882
Mailing List
http://www.openwall.com/lists/oss-security/2016/08/19/7
www.securityfocus.com
http://www.securityfocus.com/bid/91488
Third Party Advisory
https://access.redhat.com/blogs/766093/posts/1976703
Patch
https://github.com/matrixssl/matrixssl/blob/master/CHANGES.md#validation-of-rsa-signature-creation
Technical Description
https://people.redhat.com/~fweimer/rsa-crt-leaks.pdf
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