CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 0CVE-2019-14317
https://notcve.org/view.php?id=CVE-2019-14317
11 Dec 2019 — 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. wolfSSL and wolfCrypt versión 4.1.0 y anteriores (anteriormente conocido como CyaSSL), generan nonces DSA sesgados. Esto permite a un atacante remoto calcular la clave privada a largo plazo de varios cientos de firmas DSA... • https://www.wolfssl.com/docs/security-vulnerabilities • CWE-331: Insufficient Entropy •
CVSS: 4.7EPSS: 0%CPEs: 1EXPL: 0CVE-2019-13628
https://notcve.org/view.php?id=CVE-2019-13628
03 Oct 2019 — wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or --enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length. wolfSSL y wolfCrypt versión 4.0.0 y anteriores ... • http://www.openwall.com/lists/oss-security/2019/10/02/2 • CWE-203: Observable Discrepancy •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2019-16748
https://notcve.org/view.php?id=CVE-2019-16748
24 Sep 2019 — In wolfSSL through 4.1.0, there is a missing sanity check of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer over-read in CheckCertSignature_ex in wolfcrypt/src/asn.c. En wolfSSL versiones hasta 4.1.0, se presenta una falta de comprobación de saneamiento de los accesos a la memoria en el análisis de los datos del certificado ASN.1 durante el protocolo de negociación (handshaking). Específicamente, se presenta una lectura excesiva de bú... • https://github.com/wolfSSL/wolfssl/issues/2459 • CWE-125: Out-of-bounds Read •
CVSS: 9.8EPSS: 6%CPEs: 1EXPL: 0CVE-2019-11873
https://notcve.org/view.php?id=CVE-2019-11873
23 May 2019 — wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a crafted hello client packet over the network to a TLSv1.3 wolfSSL server. The length fields of the packet: record length, client hello length, total extensions length, PSK extension length, total identity length, and identity length contain their maximum value which is 2^16. The identity data field of the PSK extension of the packet contains the attack da... • http://www.securityfocus.com/bid/108466 • CWE-787: Out-of-bounds Write •