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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: 7.5EPSS: 0%CPEs: 1EXPL: 3

An issue was discovered in wolfSSL before 5.5.0. When a TLS 1.3 client connects to a wolfSSL server and SSL_clear is called on its session, the server crashes with a segmentation fault. This occurs in the second session, which is created through TLS session resumption and reuses the initial struct WOLFSSL. If the server reuses the previous session structure (struct WOLFSSL) by calling wolfSSL_clear(WOLFSSL* ssl) on it, the next received Client Hello (that resumes the previous session) crashes the server. Note that this bug is only triggered when resuming sessions using TLS session resumption. • http://packetstormsecurity.com/files/170604/wolfSSL-Session-Resumption-Denial-Of-Service.html http://seclists.org/fulldisclosure/2023/Jan/7 https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh https://github.com/tlspuffin/tlspuffin https://github.com/wolfSSL/wolfssl/pull/5468 https://github.com/wolfSSL/wolfssl/releases https://www.wolfssl.com/docs/security-vulnerabilities • CWE-754: Improper Check for Unusual or Exceptional Conditions •