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              "value": "Issue summary: Processing a malformed PKCS#12 file can trigger a NULL pointer\u003cbr\u003edereference in the PKCS12_item_decrypt_d2i_ex() function.\u003cbr\u003e\u003cbr\u003eImpact summary: A NULL pointer dereference can trigger a crash which leads to\u003cbr\u003eDenial of Service for an application processing PKCS#12 files.\u003cbr\u003e\u003cbr\u003eThe PKCS12_item_decrypt_d2i_ex() function does not check whether the oct\u003cbr\u003eparameter is NULL before dereferencing it. When called from\u003cbr\u003ePKCS12_unpack_p7encdata() with a malformed PKCS#12 file, this parameter can\u003cbr\u003ebe NULL, causing a crash. The vulnerability is limited to Denial of Service\u003cbr\u003eand cannot be escalated to achieve code execution or memory disclosure.\u003cbr\u003e\u003cbr\u003eExploiting this issue requires an attacker to provide a malformed PKCS#12 file\u003cbr\u003eto an application that processes it. For that reason the issue was assessed as\u003cbr\u003eLow severity according to our Security Policy.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue,\u003cbr\u003eas the PKCS#12 implementation is outside the OpenSSL FIPS module boundary.\u003cbr\u003e\u003cbr\u003eOpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue."
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              "value": "Issue summary: A TLS 1.3 connection using certificate compression can be\u003cbr\u003eforced to allocate a large buffer before decompression without checking\u003cbr\u003eagainst the configured certificate size limit.\u003cbr\u003e\u003cbr\u003eImpact summary: An attacker can cause per-connection memory allocations of\u003cbr\u003eup to approximately 22 MiB and extra CPU work, potentially leading to\u003cbr\u003eservice degradation or resource exhaustion (Denial of Service).\u003cbr\u003e\u003cbr\u003eIn affected configurations, the peer-supplied uncompressed certificate\u003cbr\u003elength from a CompressedCertificate message is used to grow a heap buffer\u003cbr\u003eprior to decompression. This length is not bounded by the max_cert_list\u003cbr\u003esetting, which otherwise constrains certificate message sizes. An attacker\u003cbr\u003ecan exploit this to cause large per-connection allocations followed by\u003cbr\u003ehandshake failure. No memory corruption or information disclosure occurs.\u003cbr\u003e\u003cbr\u003eThis issue only affects builds where TLS 1.3 certificate compression is\u003cbr\u003ecompiled in (i.e., not OPENSSL_NO_COMP_ALG) and at least one compression\u003cbr\u003ealgorithm (brotli, zlib, or zstd) is available, and where the compression\u003cbr\u003eextension is negotiated. Both clients receiving a server CompressedCertificate\u003cbr\u003eand servers in mutual TLS scenarios receiving a client CompressedCertificate\u003cbr\u003eare affected. Servers that do not request client certificates are not\u003cbr\u003evulnerable to client-initiated attacks.\u003cbr\u003e\u003cbr\u003eUsers can mitigate this issue by setting SSL_OP_NO_RX_CERTIFICATE_COMPRESSION\u003cbr\u003eto disable receiving compressed certificates.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 3.6, 3.5, 3.4 and 3.3 are not affected by this issue,\u003cbr\u003eas the TLS implementation is outside the OpenSSL FIPS module boundary.\u003cbr\u003e\u003cbr\u003eOpenSSL 3.6, 3.5, 3.4 and 3.3 are vulnerable to this issue.\u003cbr\u003e\u003cbr\u003eOpenSSL 3.0, 1.1.1 and 1.0.2 are not affected by this issue."
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