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CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 0

In wolfSSL before 5.5.2, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS 1.3 client or network attacker can trigger a buffer over-read on the heap of 5 bytes. (WOLFSSL_CALLBACKS is only intended for debugging.) En wolfSSL anterior a 5.5.2, si las funciones callback están habilitadas (a través del indicador WOLFSSL_CALLBACKS), entonces un cliente TLS 1.3 malicioso o un atacante de red puede desencadenar una sobrelectura del búfer de memoria de 5 bytes. (WOLFSSL_CALLBACKS solo está destinado a la depuración). wolfSSL versions prior to 5.5.2 suffer from a heap buffer over-read with WOLFSSL_CALLBACKS and can be triggered with a single Client Hello message. • http://packetstormsecurity.com/files/170610/wolfSSL-WOLFSSL_CALLBACKS-Heap-Buffer-Over-Read.html http://seclists.org/fulldisclosure/2023/Jan/11 https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh https://github.com/wolfSSL/wolfssl/releases https://github.com/wolfSSL/wolfssl/releases/tag/v5.5.2-stable https://www.wolfssl.com/docs/security-vulnerabilities • CWE-125: Out-of-bounds Read •

CVSS: 5.3EPSS: 0%CPEs: 1EXPL: 0

An issue was discovered in wolfSSL before 5.5.0. A fault injection attack on RAM via Rowhammer leads to ECDSA key disclosure. Users performing signing operations with private ECC keys, such as in server-side TLS connections, might leak faulty ECC signatures. These signatures can be processed via an advanced technique for ECDSA key recovery. (In 5.5.0 and later, WOLFSSL_CHECK_SIG_FAULTS can be used to address the vulnerability.) • https://github.com/wolfSSL/wolfssl/releases/tag/v5.5.0-stable •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1

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. • http://packetstormsecurity.com/files/169600/wolfSSL-Buffer-Overflow.html http://seclists.org/fulldisclosure/2022/Oct/24 https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh https://github.com/wolfSSL/wolfssl/releases https://www.wolfssl.com/docs/security-vulnerabilities • CWE-787: Out-of-bounds Write •

CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0

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. wolfSSL versiones hasta 5.0.0, permite a un atacante causar una denegación de servicio y un bucle infinito en el componente cliente mediante el envío de tráfico diseñado desde una posición de tipo Machine-in-the-Middle (MITM). La causa principal es que el módulo cliente acepta mensajes TLS que normalmente sólo son enviados a servidores TLS • https://github.com/wolfSSL/wolfssl/releases https://www.wolfssl.com/docs/security-vulnerabilities • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 3

An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket is used); however, only version 5.3.0 is exploitable. Man-in-the-middle attackers or a malicious server can crash TLS 1.2 clients during a handshake. If an attacker injects a large ticket (more than 256 bytes) into a NewSessionTicket message in a TLS 1.2 handshake, and the client has a non-empty session cache, the session cache frees a pointer that points to unallocated memory, causing the client to crash with a "free(): invalid pointer" message. NOTE: It is likely that this is also exploitable during TLS 1.3 handshakes between a client and a malicious server. With TLS 1.3, it is not possible to exploit this as a man-in-the-middle. • http://packetstormsecurity.com/files/170605/wolfSSL-5.3.0-Denial-Of-Service.html http://seclists.org/fulldisclosure/2023/Jan/8 https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh https://github.com/trailofbits/tlspuffin https://github.com/wolfSSL/wolfssl/pull/5476 https://github.com/wolfSSL/wolfssl/releases https://www.wolfssl.com/docs/security-vulnerabilities • CWE-770: Allocation of Resources Without Limits or Throttling •