63 matches found
CVE-2026-2646
A heap-buffer-overflow vulnerability exists in wolfSSL's wolfSSLd2iSSLSESSION function. When deserializing session data with SESSIONCERTS enabled, certificate and session id lengths are read from an untrusted input without bounds validation, allowing an attacker to overflow fixed-size buffers and...
CVE-2026-0819 Stack buffer overflow in PKCS7 SignedData encoding with custom signed attributes
A stack buffer overflow vulnerability exists in wolfSSL's PKCS7 SignedData encoding functionality. In wcPKCS7BuildSignedAttributes, when adding custom signed attributes, the code passes an incorrect capacity value esd-signedAttribsCount to EncodeAttributes instead of the remaining available space...
wolfSSL 安全漏洞
wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the US company wolfSSL, aimed at developers working with embedded systems. Version 5.8.4 of wolfSSL contains a security vulnerability. This vulnerability stems from the lack of a software implementation for 64-bit...
wolfSSL 安全漏洞
wolfSSL CyaSSL is a small, portable embedded SSL programming library developed by the US-based wolfSSL company, designed for developers working with embedded systems. There is a security vulnerability in wolfSSL, which stems from a heap-based buffer overflow in the KCAPI ECC code path of...
PT-2026-26376
Name of the Vulnerable Software and Affected Versions wolfSSL versions 5.8.4 and earlier Description An out-of-bounds heap read issue exists in the wc PKCS7 DecodeEnvelopedData function when processing crafted CMS EnvelopedData messages containing zero-length encrypted content. This issue could...
CVE-2025-11934 Improper Validation of Signature Algorithm Used in TLS 1.3 CertificateVerify
Improper input validation in the TLS 1.3 CertificateVerify signature algorithm negotiation in wolfSSL 5.8.2 and earlier on multiple platforms allows for downgrading the signature algorithm used. For example when a client sends ECDSA P521 as the supported signature algorithm the server previously...
In the OpenSSL compatibility layer implementation, the function RAND_poll() was not behaving as expected and leading to the potential for predictable values returned from RAND_bytes() after fork() is called. This can lead to weak or predictable random numbers generated in applications that are both using RAND_bytes() and doing fork() operations. This only affects applications explicitly calling RAND_bytes() after fork() and does not affect any internal TLS operations. Although RAND_bytes() documentation in OpenSSL calls out not being safe for use with fork() without first calling RAND_poll(), an additional code change was also made in wolfSSL to make RAND_bytes() behave similar to OpenSSL after a fork() call without calling RAND_poll(). Now the Hash-DRBG used gets reseeded after detecting running in a new process. If making use of RAND_bytes() and calling fork() we recommend updating to the latest version of wolfSSL. Thanks to Per Allansson from Appgate for the report.
...
Linux Distros Unpatched Vulnerability : CVE-2022-39173
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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 TL...
Linux Distros Unpatched Vulnerability : CVE-2021-44718
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...
Linux Distros Unpatched Vulnerability : CVE-2021-37155
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...
No QUIC certificate pinning with wolfSSL
...
Improper Certificate Validation
Overview Affected versions of this package are vulnerable to Improper Certificate Validation through pinning of the server certificate public key for HTTPS transfers. An attacker can impersonate a legitimate server and intercept or manipulate communications by presenting a fraudulent certificate...
DEBIAN-CVE-2025-5025
libcurl supports pinning of the server certificate public key for HTTPS transfers. Due to an omission, this check is not performed when connecting with QUIC for HTTP/3, when the TLS backend is wolfSSL. Documentation says the option works with wolfSSL, failing to specify that it does not for QUIC...
DEBIAN-CVE-2024-1543
The side-channel protected T-Table implementation in wolfSSL up to version 5.6.5 protects against a side-channel attacker with cache-line resolution. In a controlled environment such as Intel SGX, an attacker can gain a per instruction sub-cache-line resolution allowing them to break the...
SUSE CVE-2024-5991
In function MatchDomainName, input param str is treated as a NULL terminated string despite being user provided and unchecked. Specifically, the function X509checkhost takes in a pointer and length to check against, with no requirements that it be NULL terminated. If a caller was attempting to do...
DEBIAN-CVE-2024-5991
In function MatchDomainName, input param str is treated as a NULL terminated string despite being user provided and unchecked. Specifically, the function X509checkhost takes in a pointer and length to check against, with no requirements that it be NULL terminated. If a caller was attempting to do...
UBUNTU-CVE-2023-3724
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...
Buffer Overflow
Overview Affected versions of this package are vulnerable to Buffer Overflow in the TLSXConnectionIDParse function in dtls.c and the DoTls13ClientHello function in tls13.c. A server is vulnerable only when --enable-session-ticket is set and TLS 1.3 is in use. Under those conditions, a malicious...
UBUNTU-CVE-2021-44718
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...