PHP 4.2.2/4.3.9/4.3.10/5.0.3 unserialize infinite loop

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

A vulnerability was found in PHP 4.2.2/4.3.9/4.3.10/5.0.3 (Programming Language Software) and classified as problematic. This issue affects the function unserialize. The manipulation with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability. The summary by CVE is:

The php_handle_iff function in image.c for PHP 4.2.2, 4.3.9, 4.3.10 and 5.0.3, as reachable by the getimagesize PHP function, allows remote attackers to cause a denial of service (infinite loop) via a -8 size value.

The bug was discovered 02/23/2005. The weakness was shared 03/31/2005 with iDEFENSE (Website). It is possible to read the advisory at php.net. The identification of this vulnerability is CVE-2005-0524 since 02/23/2005. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 36 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 18437 (Mac OS X Multiple Vulnerabilities (Security Update 2005-006)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117972 (CentOS Security Update for PHP (CESA-2005:405)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at php.net. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (19920) and Tenable (18437). The entries 1320, 1318, 1554 and 1549 are related to this item.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 18437
Nessus Name: Mac OS X Multiple Vulnerabilities (Security Update 2005-006)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 54917
OpenVAS Name: Gentoo Security Advisory GLSA 200504-15 (PHP)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: php.net

Timelineinfo

02/23/2005 🔍
02/23/2005 +0 days 🔍
03/31/2005 +36 days 🔍
04/01/2005 +1 days 🔍
04/01/2005 +0 days 🔍
04/01/2005 +0 days 🔍
04/04/2005 +2 days 🔍
05/02/2005 +28 days 🔍
06/08/2005 +37 days 🔍
03/10/2021 +5754 days 🔍

Sourcesinfo

Product: php.org

Advisory: php.net
Organization: iDEFENSE
Status: Confirmed

CVE: CVE-2005-0524 (🔍)
OVAL: 🔍

X-Force: 19920
SecurityTracker: 1013619 - PHP Infinite Loops in getimagesize() Lets Users Deny Service
SecurityFocus: 12962 - PHP Group PHP Image File Format Remote Denial Of Service Vulnerability
Secunia: 14792 - PHP Multiple Vulnerabilities, Highly Critical
OSVDB: 15183 - PHP getimagesize() php_handle_iff() Function DoS
Vupen: ADV-2005-0305

See also: 🔍

Entryinfo

Created: 04/04/2005 11:56
Updated: 03/10/2021 18:54
Changes: 04/04/2005 11:56 (70), 06/08/2017 23:45 (12), 03/10/2021 18:51 (7), 03/10/2021 18:54 (1)
Complete: 🔍

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