Denial of Service Vulnerability in OpenSSL Affects Multiple Versions

CVE-2025-69421

What is CVE-2025-69421?

This vulnerability arises from a NULL pointer dereference within the PKCS12_item_decrypt_d2i_ex() function when processing malformed PKCS#12 files. If an application attempts to handle such a file, it can lead to a crash, resulting in a Denial of Service. The flaw is specific to certain versions of OpenSSL, where the function fails to validate the oct parameter for null before processing, making it susceptible to attacks leveraging malformed input. Notably, the vulnerability is not exploitable for code execution or data exposure but remains a concern for service stability.

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