Writeup Exploits
65,329 exploits tracked across all sources.
wolfSSL 5.0.0-5.1.0 - Use of Insufficiently Random Values in AES-CBC and DES3 Connections
wolfSSL 5.x before 5.1.1 uses non-random IV values in certain situations. This affects connections (without AEAD) using AES-CBC or DES3 with TLS 1.1 or 1.2 or DTLS 1.1 or 1.2. This occurs because of misplaced memory initialization in BuildMessage in internal.c.
CVSS 9.1
wolfssl < 5.0.0 - Denial of Service via TLS Message Spoofing
wolfSSL through 5.0.0 allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM) position. The root cause is that the client module accepts TLS messages that normally are only sent to TLS servers.
CVSS 5.9
wolfSSL 4.6.0-4.7.x - OCSP Serial Number Validation Bypass
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.
CVSS 9.8
wolfSSL 4.6.0-4.7.x - OCSP Serial Number Validation Bypass
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.
CVSS 9.8
wolfssl < 4.7.0 - Improper Certificate Validation in TLS 1.3 Client
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.
CVSS 8.1
wolfssl < 4.6.0 - Side-Channel Information Disclosure via Base64 PEM Decoding
In wolfSSL through 4.6.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.
CVSS 4.9
wolfSSL < 4.6.0 - Out-of-bounds Write in RsaPad_PSS
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
CVSS 9.8
wolfSSL < 4.6.0 - Out-of-bounds Write in RsaPad_PSS
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
CVSS 9.8
wolfSSL < 4.6.0 - Out-of-bounds Write in RsaPad_PSS
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
CVSS 9.8
wolfssl < 4.5.0 - DTLS Handshake Spoofing via Clear Application Data in Epoch 0
An issue was discovered in the DTLS handshake implementation in wolfSSL before 4.5.0. Clear DTLS application_data messages in epoch 0 do not produce an out-of-order error. Instead, these messages are returned to the application.
CVSS 5.3
wolfssl < 4.5.0 - DTLS Handshake Spoofing via Clear Application Data in Epoch 0
An issue was discovered in the DTLS handshake implementation in wolfSSL before 4.5.0. Clear DTLS application_data messages in epoch 0 do not produce an out-of-order error. Instead, these messages are returned to the application.
CVSS 5.3
wolfssl < 4.5.0 - Cache-Timing Attack via Public Key Operations
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).
CVSS 7.0
wolfssl < 4.5.0 - Denial of Service via TLS 1.3 ChangeCipherSpec Message Processing
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.
CVSS 7.5
wolfssl < 4.5.0 - Denial of Service via TLS 1.3 ChangeCipherSpec Message Processing
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.
CVSS 7.5
wolfssl < 4.4.0 - Observable Discrepancy in ECC Private-Key Operations
The private-key operations in ecc.c in wolfSSL before 4.4.0 do not use a constant-time modular inverse when mapping to affine coordinates, aka a "projective coordinates leak."
CVSS 5.3
wolfSSL 4.3.0 - Timing Side-Channel Attack in ECC Mulmod Operation
wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.
CVSS 7.5
wolfssl < 3.15.7 - Heap-Based Buffer Overflow in TLS Benchmark Tool
examples/benchmark/tls_bench.c in a benchmark tool in wolfSSL through 3.15.7 has a heap-based buffer overflow.
CVSS 9.8
wolfssl < 4.3.0 - Side-Channel Attack via DSA Nonce Modular Inversion
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 5.3
wolfssl < 4.3.0 - Fault Injection in RSA Cryptography via wc_SignatureGenerateHash
wolfSSL before 4.3.0 mishandles calls to wc_SignatureGenerateHash, leading to fault injection in RSA cryptography.
CVSS 7.5
wolfssl < 4.3.0 - Side-Channel Attack via wc_ecc_mulmod_ex
In wolfSSL before 4.3.0, wc_ecc_mulmod_ex does not properly resist side-channel attacks.
CVSS 5.3
wolfSSL 4.1.0-4.2.0c - Heap-Based Buffer Overflow in ASN.1 Certificate Parsing
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 7.5
wolfssl < 4.1.0 - Out-of-bounds Read in ASN.1 Certificate Parsing
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.
CVSS 9.8
wolfSSL 4.1.0 - Heap-Based Buffer Over-Read in DecodeCertExtensions
wolfSSL 4.1.0 has a one-byte heap-based buffer over-read in DecodeCertExtensions in wolfcrypt/src/asn.c because reading the ASN_BOOLEAN byte is mishandled for a crafted DER certificate in GetLength_ex.
CVSS 9.8
wolfssl < 3.15.7 - TLS Downgrade Attack via Bleichenbacher Attack Variant
It was found that wolfssl before 3.15.7 is vulnerable to a new variant of the Bleichenbacher attack to perform downgrade attacks against TLS. This may lead to leakage of sensible data.
CVSS 5.9
wolfSSL < 3.11.0 - Denial of Service via Malformed DH Key
wolfSSL before 3.11.0 does not prevent wc_DhAgree from accepting a malformed DH key.
CVSS 7.5
By Source