PHP ecalloc() integer overflow
| php-ecalloc-integer-overflow (29362) |  High Risk |
Description:
PHP is vulnerable to an integer overflow in the ecalloc() function of the zend_alloc.c module and in the unserialize() function. A remote attacker could exploit this vulnerability to execute arbitrary code or cause the application to crash by sending a specially-crafted request to a vulnerable PHP script.
*CVSS:
| Base Score: | 7 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.2 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest CVS release of PHP, available from The PHP Group Web site. See References.
For Red Hat Linux 2.1:
Refer to RHSA-2006:0710-7 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200610-14 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:059 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Full-Disclosure Mailing List, Mon Oct 09 2006 - 01:51:07 CDT: Advisory 09/2006: PHP unserialize() Array Creation Integer Overflow.
- The PHP Group Web site: PHP: Downloads.
- ASA-2006-223: php security update (RHSA-2006-0688)
- ASA-2006-234: php security update (RHSA-2006-0708)
- BID-20349: PHP ZendEngine ECalloc Integer Overflow Vulnerability
- CVE-2006-4812: Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).
- GLSA-200610-14: PHP: Integer overflow
- OpenPKG-SA-2006.023: PHP
- RHSA-2006-0688: php security update
- RHSA-2006-0708: php security update
- SA22280: PHP "_ecalloc" Integer Overflow Vulnerability
- SA22533: Avaya Products PHP "_ecalloc" Integer Overflow Vulnerability
- SA22538: Avaya Products PHP Multiple Vulnerabilites
- SECTRACK ID: 1016984: PHP Heap Overflows and Other Bugs Let Users Execute Arbitrary Code or Cause Denial of Service Conditions
- SUSE-SA:2006:059: PHP security problems
- USN-362-1: PHP vulnerabilities
- VUPEN/ADV-2006-3922: PHP ecalloc() Function Data Handling Remote Integer Overflow Vulnerability
Platforms Affected:
- Canonical Ubuntu 5.04
- Canonical Ubuntu 5.10
- Canonical Ubuntu 6.06 LTS
- Gentoo Linux
- IBM AIX
- Novell Linux POS 9
- Novell Open Enterprise Server
- Novell Open Enterprise Server
- Novell SLE SDK 10
- Novell UnitedLinux 1.0
- OpenPKG OpenPKG 2-STABLE
- OpenPKG OpenPKG CURRENT
- OpenPKG OpenPKG Enterprise E1.0-SOLID
- PHP PHP 5.0.0
- RedHat Application Stack v1 for EL AS 4
- RedHat Application Stack v1 for EL ES 4
- RedHat Enterprise Linux 2.1 WS
- RedHat Enterprise Linux 2.1 ES
- RedHat Enterprise Linux 2.1 AS
- RedHat Linux Advanced Workstation 2.1 Itanium
- SuSE Linux Enterprise Server 8
- SUSE SuSE Linux 10.0
- SUSE SuSE Linux 10.1
- SUSE SuSE Linux 9.2
- SUSE SuSE Linux 9.3
- SuSE SuSE Linux OpenExchange Server 4
- SuSE SuSE Linux Retail Solution 8
- SuSE SuSE Linux School Server
- SuSE SuSE Linux Standard Server 8
- SuSE SuSE SLES 10
- SuSE SuSE SLES 9
Reported:
Oct 05, 2006
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.