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CVE-2025-7394

CVE-2025-7394

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 7.0 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • wolfssl

    Versions
    • ≥ 3.15.0, ≤ 5.8.0: Affected (git)

    No fix published

  • wolfssl Debian:12

    Versions
    • 5.5.4-2
    • 5.5.4-2+deb12u1
    Affected ranges
    • ECOSYSTEM: < 5.5.4-2+deb12u2

    Update to 5.5.4-2+deb12u2

  • wolfssl Debian:13

    Versions
    • 5.7.2-0.1
    Affected ranges
    • ECOSYSTEM: < 5.7.2-0.1+deb13u1

    Update to 5.7.2-0.1+deb13u1

  • wolfssl Ubuntu:16.04:LTS

    Versions
    • 3.4.8+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:18.04:LTS

    Versions
    • 3.10.2+dfsg-2
    • 3.12.0+dfsg-1
    • 3.12.2+dfsg-1
    • 3.13.0+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:20.04:LTS

    Versions
    • 4.1.0+dfsg-2
    • 4.2.0+dfsg-1
    • 4.2.0+dfsg-2
    • 4.2.0+dfsg-3
    • 4.3.0+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:22.04:LTS

    Versions
    • 4.6.0-3
    • 5.0.0-1
    • 5.1.1-1
    • 5.2.0-1
    • 5.2.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:24.04:LTS

    Versions
    • 5.5.4-2
    • 5.5.4-2.1
    • 5.6.4-2
    • 5.6.6-1.2
    • 5.6.6-1.3
    • 5.6.6-1.3build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:25.10

    Versions
    • 5.7.2-0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:26.10

    Versions
    • 5.9.1-0.1
    • 5.9.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:26.04:LTS

    Versions
    • 5.7.2-0.1
    • 5.8.2-1.2
    • 5.8.4-1
    • 5.9.1-0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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