critical
9.8
CWE
20
Advisory Published
Updated

CVE-2016-4537: Input Validation

First published: Sun May 22 2016(Updated: )

Fixed bug (bcpowmod accepts negative scale and corrupts _one_ definition). (CVE-2016-4537, CVE-2016-4538)

Credit: security@debian.org security@debian.org

Affected SoftwareAffected VersionHow to fix
PHP PHP<=5.5.34
PHP PHP=5.6.0
PHP PHP=5.6.1
PHP PHP=5.6.2
PHP PHP=5.6.3
PHP PHP=5.6.4
PHP PHP=5.6.5
PHP PHP=5.6.6
PHP PHP=5.6.7
PHP PHP=5.6.8
PHP PHP=5.6.9
PHP PHP=5.6.10
PHP PHP=5.6.11
PHP PHP=5.6.12
PHP PHP=5.6.13
PHP PHP=5.6.14
PHP PHP=5.6.15
PHP PHP=5.6.16
PHP PHP=5.6.17
PHP PHP=5.6.18
PHP PHP=5.6.19
PHP PHP=5.6.20
PHP PHP=7.0.0
PHP PHP=7.0.1
PHP PHP=7.0.2
PHP PHP=7.0.3
PHP PHP=7.0.4
PHP PHP=7.0.5
openSUSE Leap=42.1
Fedoraproject Fedora=24
PHP PHP<7.0.6
7.0.6
debian/php5
debian/php7.0

Remedy

http://php.net/ChangeLog-5.php

Remedy

http://php.net/ChangeLog-7.php

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2016-4537.

  • What is the severity of CVE-2016-4537?

    The severity of CVE-2016-4537 is critical with a CVSS score of 9.8.

  • What is the affected software?

    The affected software includes PHP versions before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6.

  • How can remote attackers exploit CVE-2016-4537?

    Remote attackers can exploit CVE-2016-4537 by using a crafted call to the bcpowmod function, which can cause a denial of service or other unspecified impact.

  • Is there a fix available for CVE-2016-4537?

    Yes, the fix for CVE-2016-4537 is included in PHP version 5.5.35, 5.6.21, and 7.0.6.

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