CVE-2008-5557: Buffer Overflow

Published Dec 23, 2008

Updated

Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilterhtmlent.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) mbconvertencoding, (2) mbcheckencoding, (3) mbconvertvariables, and (4) mbparsestr functions.

Affected Software

49 affected components

PHP PHP=4.3.9

PHP PHP=4.4.9

PHP PHP=5.1.5

PHP PHP=5.1.2

PHP PHP=5.1.1

PHP PHP=4.4.4

PHP PHP=5.0.0-beta1

PHP PHP=5.1.6

PHP PHP=4.3.4

PHP PHP=4.3.0

PHP PHP=5.2.2

PHP PHP=5.0.5

PHP PHP=4.3.6

PHP PHP=5.0.1

PHP PHP=5.1.4

PHP PHP=5.2.5

PHP PHP=4.3.7

PHP PHP=5.0.4

PHP PHP=4.4.2

PHP PHP=4.3.2

PHP PHP=4.3.11

PHP PHP=4.3.3

PHP PHP=5.2.6

PHP PHP=4.4.3

PHP PHP=5.0.0-rc2

PHP PHP=5.2.3

PHP PHP=5.0.3

PHP PHP=5.1.0

PHP PHP=4.4.5

PHP PHP=5.0.0-rc3

PHP PHP=4.4.8

PHP PHP=5.2.0

PHP PHP=5.2.4

PHP PHP=5.0.0-beta3

PHP PHP=4.3.1

PHP PHP=5.1.3

PHP PHP=4.4.0

PHP PHP=4.3.10

PHP PHP=5.0.0-rc1

PHP PHP=5.0.2

PHP PHP=4.4.6

PHP PHP=4.4.1

PHP PHP=5.2.1

PHP PHP=5.0.0-beta4

PHP PHP=5.0.0

PHP PHP=4.3.8

PHP PHP=4.3.5

PHP PHP=5.0.0-beta2

PHP PHP=4.4.7

Event History

Dec 23, 2008

CVE Published

via MITRE·06:13 PM

Data Sourced

via MITRE·06:13 PM

Description

Data Sourced

via NVD·06:30 PM

DescriptionSeverityWeaknessAffected Software

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.