Vulnerabilities (CVE)

Filtered by vendor Wolfssl Subscribe
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2022-39173 1 Wolfssl 1 Wolfssl 2023-08-08 N/A 7.5 HIGH
In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake. This occurs when an attacker supposedly resumes a previous TLS session. During the resumption Client Hello a Hello Retry Request must be triggered. Both Client Hellos are required to contain a list of duplicate cipher suites to trigger the buffer overflow. In total, two Client Hellos have to be sent: one in the resumed session, and a second one as a response to a Hello Retry Request message.
CVE-2022-25640 1 Wolfssl 1 Wolfssl 2023-08-08 5.0 MEDIUM 7.5 HIGH
In wolfSSL before 5.2.0, a TLS 1.3 server cannot properly enforce a requirement for mutual authentication. A client can simply omit the certificate_verify message from the handshake, and never present a certificate.
CVE-2023-3724 1 Wolfssl 1 Wolfssl 2023-07-28 N/A 8.8 HIGH
If a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM (Input Keying Material) value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. wolfSSL recommends that TLS 1.3 client side users update the version of wolfSSL used. 
CVE-2020-11713 1 Wolfssl 1 Wolfssl 2022-01-01 5.0 MEDIUM 7.5 HIGH
wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.
CVE-2020-12457 1 Wolfssl 1 Wolfssl 2021-07-21 5.0 MEDIUM 7.5 HIGH
An issue was discovered in wolfSSL before 4.5.0. It mishandles the change_cipher_spec (CCS) message processing logic for TLS 1.3. If an attacker sends ChangeCipherSpec messages in a crafted way involving more than one in a row, the server becomes stuck in the ProcessReply() loop, i.e., a denial of service.
CVE-2019-19962 1 Wolfssl 1 Wolfssl 2021-07-21 5.0 MEDIUM 7.5 HIGH
wolfSSL before 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography.
CVE-2021-3336 1 Wolfssl 1 Wolfssl 2021-03-04 6.8 MEDIUM 8.1 HIGH
DoTls13CertificateVerify in tls13.c in wolfSSL before 4.7.0 does not cease processing for certain anomalous peer behavior (sending an ED22519, ED448, ECC, or RSA signature without the corresponding certificate). The client side is affected because man-in-the-middle attackers can impersonate TLS 1.3 servers.
CVE-2020-15309 1 Wolfssl 1 Wolfssl 2020-10-28 6.9 MEDIUM 7.0 HIGH
An issue was discovered in wolfSSL before 4.5.0, when single precision is not employed. Local attackers can conduct a cache-timing attack against public key operations. These attackers may already have obtained sensitive information if the affected system has been used for private key operations (e.g., signing with a private key).
CVE-2014-2904 1 Wolfssl 1 Wolfssl 2019-12-04 5.0 MEDIUM 7.5 HIGH
wolfssl before 3.2.0 has a server certificate that is not properly authorized for server authentication.
CVE-2014-2901 1 Wolfssl 1 Wolfssl 2019-12-04 5.0 MEDIUM 7.5 HIGH
wolfssl before 3.2.0 does not properly issue certificates for a server's hostname.
CVE-2014-2902 1 Wolfssl 1 Wolfssl 2019-12-04 5.0 MEDIUM 7.5 HIGH
wolfssl before 3.2.0 does not properly authorize CA certificate for signing other certificates.
CVE-2019-18840 1 Wolfssl 1 Wolfssl 2019-11-12 5.0 MEDIUM 7.5 HIGH
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.
CVE-2017-8855 1 Wolfssl 1 Wolfssl 2019-10-03 5.0 MEDIUM 7.5 HIGH
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
CVE-2017-8854 1 Wolfssl 1 Wolfssl 2017-05-17 6.8 MEDIUM 7.8 HIGH
wolfSSL before 3.10.2 has an out-of-bounds memory access with loading crafted DH parameters, aka a buffer overflow triggered by a malformed temporary DH file.
CVE-2015-6925 1 Wolfssl 1 Wolfssl 2016-01-25 5.0 MEDIUM 7.5 HIGH
wolfSSL (formerly CyaSSL) before 3.6.8 allows remote attackers to cause a denial of service (resource consumption or traffic amplification) via a crafted DTLS cookie in a ClientHello message.