PHP 5.2.1 str_ireplace off-by-one

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in PHP 5.2.1. The impacted element is the function str_ireplace. The manipulation leads to off-by-one. This vulnerability is traded as CVE-2007-0911. Furthermore, there is an exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP 5.2.1 (Programming Language Software). It has been rated as critical. This issue affects the function str_ireplace. The manipulation with an unknown input leads to a off-by-one vulnerability. Using CWE to declare the problem leads to CWE-193. A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. Impacted is availability. The summary by CVE is:

Off-by-one error in the str_ireplace function in PHP 5.2.1 might allow context-dependent attackers to cause a denial of service (crash).

The bug was discovered 02/09/2007. The weakness was shared 02/10/2007 (Website). The advisory is shared at archives.neohapsis.com. The identification of this vulnerability is CVE-2007-0911 since 02/13/2007. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 24887 (GLSA-200703-21 : PHP: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165086 (SUSE Security Update for PHP4, PHP5 (SUSE-SA:2007:020)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (32532), Exploit-DB (29577), Tenable (24887), SecurityFocus (BID 22505†) and OSVDB (33952†). The entries VDB-33752, VDB-35552, VDB-35535 and VDB-35532 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Off-by-one
CWE: CWE-193 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 24887
Nessus Name: GLSA-200703-21 : PHP: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850075
OpenVAS Name: SurgeMail SurgeWeb Cross Site Scripting Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

02/09/2007 🔍
02/09/2007 +0 days 🔍
02/10/2007 +0 days 🔍
02/13/2007 +3 days 🔍
02/13/2007 +0 days 🔍
02/13/2007 +0 days 🔍
03/15/2007 +30 days 🔍
03/20/2007 +5 days 🔍
03/26/2007 +6 days 🔍
04/01/2007 +6 days 🔍
04/03/2007 +1 days 🔍
03/13/2015 +2901 days 🔍
04/10/2025 +3681 days 🔍

Sourcesinfo

Product: php.org

Advisory: archives.neohapsis.com
Status: Confirmed

CVE: CVE-2007-0911 (🔍)
GCVE (CVE): GCVE-0-2007-0911
GCVE (VulDB): GCVE-100-35009
X-Force: 32532
SecurityFocus: 22505 - PHP STR_IReplace Remote Denial of Service Vulnerability
Secunia: 24514 - SUSE update for php4 and php5, Moderately Critical
OSVDB: 33952 - PHP str_ireplace Function Off-by-one DoS
Vulnerability Center: 14739 - PHP 5.2.1 Off-By-One in str_ireplace Function Denial of Service, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/13/2015 12:16
Updated: 04/10/2025 15:03
Changes: 03/13/2015 12:16 (83), 07/17/2019 09:55 (4), 04/10/2025 15:03 (19)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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