Medium severity · published Jan 13, 2017
CVE-2016-8671
The pstm_exptmod function in MatrixSSL 3.8.6 and earlier does not properly perform modular exponentiation, which might allow remote attackers to predict the secret key via…
5.9
CVSS
1.3%
EPSS
No
On KEV
Description
The pstm_exptmod function in MatrixSSL 3.8.6 and earlier does not properly perform modular exponentiation, which might allow remote attackers to predict the secret key via unspecified vectors. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-6887.
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 71% 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-2016-8671
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-8671
Mailing List
http://www.openwall.com/lists/oss-security/2016/10/15/2
Mailing List
http://www.openwall.com/lists/oss-security/2016/10/15/8
www.securityfocus.com
http://www.securityfocus.com/bid/95439
blog.fuzzing-project.org
https://blog.fuzzing-project.org/54-Update-on-MatrixSSL-miscalculation-CVE-2016-8671%2C-incomplete-fix-for-CVE-2016-6887.html
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