VulnerabilityModified
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 unspecified vectors.
MEDIUM 5.9EPSS 1.35%
Does this matter?
Lower severity and a low EPSS score (1.35%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.35% probability · 70th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- matrixssl/matrixssl
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2016/10/15/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/15/8Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95439
- https://blog.fuzzing-project.org/54-Update-on-MatrixSSL-miscalculation-CVE-2016-8671%2C-incomplete-fix-for-CVE-2016-6887.html
- http://www.openwall.com/lists/oss-security/2016/10/15/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/10/15/8Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/95439
- https://blog.fuzzing-project.org/54-Update-on-MatrixSSL-miscalculation-CVE-2016-8671%2C-incomplete-fix-for-CVE-2016-6887.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.