vulnwire
5.9med

CVE-2016-6887

The pstm_exptmod function in MatrixSSL 3.8.6 and earlier does not properly perform modular exponentiation, which might allow remote attacke…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
5.9
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.1%
percentile 67%
Public exploits
0
none known

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 a CRT attack.

Exploit prediction (EPSS)

1.15% probability of exploitation in the next 30 days, higher than 67% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

  • matrixssl.org /blog/releases/matrixssl_3_8_4 · x_refsource_CONFIRM, x_transferred
  • blog.fuzzing-project.org /51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html · x_refsource_MISC, x_transferred

Sources

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