critical
10
CWE
119
Advisory Published
Updated

CVE-2008-5557: Buffer Overflow

First published: Tue Dec 23 2008(Updated: )

Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
PHP=4.3.9
PHP=4.4.9
PHP=5.1.5
PHP=5.1.2
PHP=5.1.1
PHP=4.4.4
PHP=5.0.0-beta1
PHP=5.1.6
PHP=4.3.4
PHP=4.3.0
PHP=5.2.2
PHP=5.0.5
PHP=4.3.6
PHP=5.0.1
PHP=5.1.4
PHP=5.2.5
PHP=4.3.7
PHP=5.0.4
PHP=4.4.2
PHP=4.3.2
PHP=4.3.11
PHP=4.3.3
PHP=5.2.6
PHP=4.4.3
PHP=5.0.0-rc2
PHP=5.2.3
PHP=5.0.3
PHP=5.1.0
PHP=4.4.5
PHP=5.0.0-rc3
PHP=4.4.8
PHP=5.2.0
PHP=5.2.4
PHP=5.0.0-beta3
PHP=4.3.1
PHP=5.1.3
PHP=4.4.0
PHP=4.3.10
PHP=5.0.0-rc1
PHP=5.0.2
PHP=4.4.6
PHP=4.4.1
PHP=5.2.1
PHP=5.0.0-beta4
PHP=5.0.0
PHP=4.3.8
PHP=4.3.5
PHP=5.0.0-beta2
PHP=4.4.7

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2008-5557?

    The severity of CVE-2008-5557 is critical due to its potential for arbitrary code execution.

  • How do I fix CVE-2008-5557?

    To fix CVE-2008-5557, upgrade to a version of PHP higher than 5.2.7 or apply patches provided in later releases.

  • What are the affected versions in CVE-2008-5557?

    CVE-2008-5557 affects PHP versions 4.3.0 to 5.2.6.

  • What types of attacks are possible with CVE-2008-5557?

    CVE-2008-5557 allows context-dependent attackers to execute arbitrary code through crafted strings containing HTML entities.

  • Who is impacted by CVE-2008-5557?

    Any users and applications utilizing vulnerable versions of PHP between 4.3.0 and 5.2.6 are at risk from CVE-2008-5557.

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