critical
9.8
CWE
416
Advisory Published
CVE Published
Updated

CVE-2016-4473: Use After Free

First published: Fri Jun 17 2016(Updated: )

/ext/phar/phar_object.c in PHP 7.0.7 and 5.6.x allows remote attackers to execute arbitrary code. NOTE: Introduced as part of an incomplete fix to CVE-2015-6833.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/php<5.6.23
5.6.23
PHP<7.0.8
7.0.8
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=5.6.11
PHP=5.6.12
PHP=5.6.13
PHP=5.6.14
PHP=5.6.15
PHP=5.6.16
PHP=5.6.17
PHP=5.6.18
PHP=5.6.19
PHP=5.6.20
PHP=5.6.21
PHP=5.6.22
PHP=7.0.7
SUSE Linux Enterprise Module for Web Scripting=12
SUSE Linux Enterprise Software Development Kit=12-sp1

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1347772

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-4473?

    CVE-2016-4473 is classified as a critical vulnerability allowing remote code execution.

  • How do I fix CVE-2016-4473?

    To fix CVE-2016-4473, upgrade PHP to versions 5.6.23 or 7.0.8 or later.

  • What versions of PHP are affected by CVE-2016-4473?

    CVE-2016-4473 affects PHP versions 5.6.0 to 5.6.22 and 7.0.0 to 7.0.7.

  • Can CVE-2016-4473 be exploited without user interaction?

    Yes, CVE-2016-4473 can be exploited remotely without user interaction.

  • What is the nature of the vulnerability in CVE-2016-4473?

    CVE-2016-4473 involves an invalid free issue in the phar_extract_file() function, enabling arbitrary code execution.

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