Skip to content
OpenAdvisories
Low RLSA-2023:7877 4 CVEs

Low: openssl security update

Published Dec 3, 2025 · Updated Dec 3, 2025

Summary

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

* openssl: Excessive time spent checking DH keys and parameters (CVE-2023-3446)

* OpenSSL: Excessive time spent checking DH q parameter value (CVE-2023-3817)

* openssl: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow (CVE-2023-5678)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 openssl 1:1.1.1k-12.el8_9

Vulnerabilities 4

  • Medium 5.9

    PHP is vulnerable to the Marvin Attack

    The openssl_private_decrypt function in PHP, when using PKCS1 padding (OPENSSL_PKCS1_PADDING, which is the default), is vulnerable to the Marvin Attack unless it is used with an OpenSSL version that includes the changes from this pull request: https://github.…

  • Medium 5.3

    Excessive time spent checking DH keys and parameters

    Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the k…

  • Medium 5.3

    Excessive time spent checking DH q parameter value

    Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the k…

  • Medium 5.3

    Excessive time spent in DH check / generation with large Q parameter value

    Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_generate_key() to generate an X9.42 DH key may experience long delays. L…

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2224962
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2227852
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2248616
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2270358