CVE-2025-7394_CVE-2025-7394

7 / 10

HIGH

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2025-7394

Source wolfSSL

Published Jul 18, 2025 at 22:34

Modified Jul 21, 2025 at 15:00

Affected Product

Vendor wolfSSL

Product wolfSSL

Version 3.15.0

Affected Versions wolfSSL wolfSSL 3.15.0

CWE Classification

CWE-200

References

github.com /wolfSSL/wolfssl/blob/master/ChangeLog.md

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