medium
5.9
CWE
284
Advisory Published
Updated

CVE-2015-8838

First published: Mon May 16 2016(Updated: )

ext/mysqlnd/mysqlnd.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 uses a client SSL option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, a related issue to CVE-2015-3152.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/php5
PHP=5.5.0
PHP=5.5.0-alpha1
PHP=5.5.0-alpha2
PHP=5.5.0-alpha3
PHP=5.5.0-alpha4
PHP=5.5.0-alpha5
PHP=5.5.0-alpha6
PHP=5.5.0-beta1
PHP=5.5.0-beta2
PHP=5.5.0-beta3
PHP=5.5.0-beta4
PHP=5.5.0-rc1
PHP=5.5.0-rc2
PHP=5.5.1
PHP=5.5.2
PHP=5.5.3
PHP=5.5.4
PHP=5.5.5
PHP=5.5.6
PHP=5.5.7
PHP=5.5.8
PHP=5.5.9
PHP=5.5.10
PHP=5.5.11
PHP=5.5.12
PHP=5.5.13
PHP=5.5.14
PHP=5.5.15
PHP=5.5.16
PHP=5.5.17
PHP=5.5.18
PHP=5.5.19
PHP=5.5.20
PHP=5.5.21
PHP=5.5.22
PHP=5.5.23
PHP=5.5.24
PHP=5.5.25
PHP=5.5.26
PHP=5.6.0-alpha1
PHP=5.6.0-alpha2
PHP=5.6.0-alpha3
PHP=5.6.0-alpha4
PHP=5.6.0-alpha5
PHP=5.6.0-beta1
PHP=5.6.0-beta2
PHP=5.6.0-beta3
PHP=5.6.0-beta4
PHP=5.6.1
PHP=5.6.2
PHP=5.6.3
PHP=5.6.4
PHP=5.6.5
PHP=5.6.6
PHP=5.6.7
PHP=5.6.8
PHP=5.6.9
PHP=5.6.10
PHP<=5.4.42

Remedy

http://git.php.net/?p=php-src.git;a=commit;h=0d2f147d80bd02d4d1ccaa0fa530d9d4846b3c75

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-8838?

    CVE-2015-8838 is considered a medium-risk vulnerability due to its potential for man-in-the-middle attacks.

  • How do I fix CVE-2015-8838?

    To mitigate CVE-2015-8838, upgrade to PHP versions 5.4.43, 5.5.27, 5.6.11 or later.

  • What does CVE-2015-8838 affect?

    CVE-2015-8838 affects versions of PHP prior to 5.4.43, 5.5.27, and 5.6.11.

  • What is a cleartext-downgrade attack related to CVE-2015-8838?

    A cleartext-downgrade attack allows attackers to intercept and manipulate data by forcing a connection downgrade to an unencrypted channel.

  • Is CVE-2015-8838 related to any other vulnerabilities?

    Yes, CVE-2015-8838 is related to CVE-2015-3152, which also involves SSL security issues.

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