MatrixSSL before 3.8.7, when the DHERSA based cipher suite is supported, makes it easier for remote attackers to obtain RSA private key information by conducting a Lenstra side-channel attack.

MatrixSSL before 3.8.3 configured with RSA Cipher Suites allows remote attackers to obtain sensitive information via a Bleichenbacher variant attack.

TLS cipher suites with CBC mode in TLS 1.1 and 1.2 in MatrixSSL before 3.8.3 allow remote attackers to cause a denial of service (out-of-bounds read) via a crafted message.

The pstmexptmod function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid free and crash) via a base zero value for the modular exponentiation.

The pstmreverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange.

The pstmexptmod 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.

The pstmexptmod 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.

MatrixSSL version 3.7.2 adopts a collision-prone OID comparison logic resulting in possible spoofing of OIDs (e.g. in ExtKeyUsage extension) on X.509 certificates.