PHP up to 5.4.3 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability has been found in PHP (Programming Language Software) and classified as problematic. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. CVE summarizes: in the PDO extension in PHP before 5.3.14 and 5.4.x before 5.4.4 does not properly determine the end of the query string during parsing of prepared statements, which allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted parameter value.

The weakness was shared 08/06/2012 by 0x721427D8 as Bug 769785 as not defined bug report (Bugzilla). The advisory is available at This vulnerability was named CVE-2012-3450 since 06/14/2012. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 61520 (Debian DSA-2527-1 : php5 - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195388 (Ubuntu Security Notification for Php5 Vulnerabilities (USN-1569-1)).

Upgrading to version 5.4.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (61520). The entries 3695, 5786, 5794 and 9021 are related to this item.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔍
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Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

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

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Current Price Estimation: 🔍


Nessus ID: 61520
Nessus Name: Debian DSA-2527-1 : php5 - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 71823
OpenVAS Name: Debian Security Advisory DSA 2527-1 (php5)
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 5.4.0


06/14/2012 🔍
08/02/2012 +49 days 🔍
08/02/2012 +0 days 🔍
08/06/2012 +4 days 🔍
08/06/2012 +0 days 🔍
11/13/2012 +99 days 🔍
03/23/2015 +860 days 🔍
12/07/2021 +2451 days 🔍



Advisory: Bug 769785
Researcher: 0x721427D8
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-3450 (🔍)

Vulnerability Center: 37198 - PHP Before 5.3.14 and 5.4 Before 5.4.4 Remote DoS Vulnerability via a Crafted Parameter Value, Medium
SecurityFocus: 54777 - PHP PDO Memory Access Violation Denial of Service Vulnerability

scip Labs:
See also: 🔍


Created: 03/23/2015 04:50 PM
Updated: 12/07/2021 09:31 AM
Changes: 03/23/2015 04:50 PM (61), 09/03/2017 02:59 PM (15), 12/07/2021 09:31 AM (3)
Complete: 🔍


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