Wolfssl: Security Vulnerabilities
The DoAlert function in the (1) TLS and (2) DTLS implementations in wolfSSL CyaSSL before 2.9.4 allows remote attackers to have unspecified impact and vectors, which trigger memory corruption or an out-of-bounds read.
CVSS Score
9.8
EPSS Score
0.028
Published
2020-01-28
The SSL 3 HMAC functionality in wolfSSL CyaSSL 2.5.0 before 2.9.4 does not check the padding length when verification fails, which allows remote attackers to have unspecified impact via a crafted HMAC, which triggers an out-of-bounds read.
CVSS Score
9.8
EPSS Score
0.028
Published
2020-01-28
In wolfSSL before 4.3.0, wc_ecc_mulmod_ex does not properly resist side-channel attacks.
CVSS Score
5.3
EPSS Score
0.01
Published
2019-12-25
wolfSSL before 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography.
CVSS Score
7.5
EPSS Score
0.009
Published
2019-12-25
An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled. DSA signing uses the BEEA algorithm during modular inversion of the nonce, leading to a side-channel attack against the nonce.
CVSS Score
5.3
EPSS Score
0.01
Published
2019-12-25
wolfSSL and wolfCrypt 4.1.0 and earlier (formerly known as CyaSSL) generate biased DSA nonces. This allows a remote attacker to compute the long term private key from several hundred DSA signatures via a lattice attack. The issue occurs because dsa.c fixes two bits of the generated nonces.
CVSS Score
5.3
EPSS Score
0.018
Published
2019-12-11
wolfssl before 3.2.0 does not properly issue certificates for a server's hostname.
CVSS Score
7.5
EPSS Score
0.006
Published
2019-11-21
wolfssl before 3.2.0 does not properly authorize CA certificate for signing other certificates.
CVSS Score
7.5
EPSS Score
0.008
Published
2019-11-21
wolfssl before 3.2.0 has a server certificate that is not properly authorized for server authentication.
CVSS Score
7.5
EPSS Score
0.009
Published
2019-11-21
In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free.
CVSS Score
7.5
EPSS Score
0.02
Published
2019-11-09