CWE
17
Advisory Published
Updated

CVE-2015-5894

First published: Fri Oct 09 2015(Updated: )

The X.509 certificate-trust implementation in Apple OS X before 10.11 does not recognize that the kSecRevocationRequirePositiveResponse flag implies a revocation-checking requirement, which makes it easier for man-in-the-middle attackers to spoof endpoints by leveraging access to a revoked certificate.

Credit: product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple iOS and macOS<=10.10.5

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Frequently Asked Questions

  • What is the severity of CVE-2015-5894?

    CVE-2015-5894 is considered a high severity vulnerability due to its potential to allow man-in-the-middle attacks.

  • How do I fix CVE-2015-5894?

    To fix CVE-2015-5894, update your Apple OS X to version 10.11 or later where the vulnerability is addressed.

  • What type of attack does CVE-2015-5894 facilitate?

    CVE-2015-5894 facilitates man-in-the-middle attacks by allowing attackers to spoof endpoints using revoked certificates.

  • Which versions of macOS are affected by CVE-2015-5894?

    CVE-2015-5894 affects macOS versions prior to 10.11, specifically up to and including 10.10.5.

  • What part of the X.509 certificate system is impacted by CVE-2015-5894?

    CVE-2015-5894 impacts the revocation-checking mechanism in the X.509 certificate-trust implementation.

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