high
7.5
CWE
416
Advisory Published
Updated

CVE-2015-2787: Use After Free

First published: Mon Mar 30 2015(Updated: )

Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages use of the unset function within an __wakeup function, a related issue to CVE-2015-0231.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PHP<=5.4.38
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=5.6.0-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
Apple iOS and macOS<=10.6.8
Apple iOS and macOS=10.9.5
Apple iOS and macOS=10.10.0
Apple iOS and macOS=10.10.1
Apple iOS and macOS=10.10.2
Apple iOS and macOS=10.10.3
Apple iOS and macOS=10.10.4
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux HPC Node=7.0
Red Hat Enterprise Linux HPC Node=7.1
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Server=7.1
Red Hat Enterprise Linux Workstation=7.0
SUSE Linux=13.1
SUSE Linux=13.2

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-2787?

    CVE-2015-2787 is considered a high severity vulnerability due to its potential to allow remote attackers to execute arbitrary code.

  • How do I fix CVE-2015-2787?

    To fix CVE-2015-2787, upgrade to PHP versions 5.4.39, 5.5.23, or 5.6.7 or later.

  • What systems are affected by CVE-2015-2787?

    CVE-2015-2787 affects PHP versions before 5.4.39, 5.5.x before 5.5.23, and 5.6.x before 5.6.7.

  • What type of vulnerability is CVE-2015-2787?

    CVE-2015-2787 is a use-after-free vulnerability in the process_nested_data function.

  • Who can exploit CVE-2015-2787?

    Remote attackers can exploit CVE-2015-2787 via a crafted unserialize call that leverages an unset function.

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