National Vulnerability Database (NVD) National Vulnerability Database (CVE-2007-4657)

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NVD is the U.S. government repository of standards based vulnerability management data. This data enables automation of vulnerability management, security measurement, and compliance (e.g. FISMA).

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NVD contains:

CVE Vulnerabilities: 56742
Checklists: 221
US-CERT Alerts: 246
US-CERT Vuln Notes: 2727
OVAL Queries: 8140
CPE Names: 73736

Last updated: Thu Jun 20 08:14:54 EDT 2013

CVE Publication rate: 11.87

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Workload Index

Vulnerability Workload Index: 5.56

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NIST Security Configuration Checklists - CSD

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Vulnerability Summary for CVE-2007-4657

Original release date:09/04/2007

Last revised:03/08/2011

Source: US-CERT/NIST

Overview

Multiple integer overflows in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, allow remote attackers to obtain sensitive information (memory contents) or cause a denial of service (thread crash) via a large len value to the (1) strspn or (2) strcspn function, which triggers an out-of-bounds read. NOTE: this affects different product versions than CVE-2007-3996.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)

Impact Subscore: 6.4

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/05/2007)

The only effect of this bug is to cause the process to read from a random segment of memory, if a large "length" parameter is passed to the strspn/strcspn function, which is under the control of the script author. This bug has no security impact.

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: http://www.php.net/ChangeLog-5.php#5.2.4

Type: Patch Information

Hyperlink:http://www.php.net/ChangeLog-5.php#5.2.4

External Source: MISC

Name: http://secweb.se/en/advisories/php-strcspn-information-leak-vulnerability/

Type: Patch Information; Exploit

Hyperlink:http://secweb.se/en/advisories/php-strcspn-information-leak-vulnerability/

External Source: SECUNIA

Name: 26642

Type: Advisory; Patch Information

Hyperlink:http://secunia.com/advisories/26642