PHP prior 5.1.0 utf8_decode input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

A vulnerability was found in PHP (Programming Language Software) and classified as problematic. This issue affects the function utf8_decode. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The utf8_decode function in PHP before 5.3.4 does not properly handle non-shortest form UTF-8 encoding and ill-formed subsequences in UTF-8 data, which makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string.

The weakness was disclosed 11/12/2010 (Website). It is possible to read the advisory at svn.php.net. The identification of this vulnerability is CVE-2010-3870 since 10/08/2010. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 50535 (Mandriva Linux Security Advisory : php (MDVSA-2010:224)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155575 (Oracle Enterprise Linux Update for PHP (ELSA-2010-0919)).

Upgrading to version 5.1.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (50535). The entries 52401, 52210, 55430 and 54435 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 50535
Nessus Name: Mandriva Linux Security Advisory : php (MDVSA-2010:224)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Port: 🔍

OpenVAS ID: 69331
OpenVAS Name: Debian Security Advisory DSA 2195-1 (php5)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PHP 5.1.0

Timelineinfo

05/11/2009 🔍
05/11/2009 +0 days 🔍
10/08/2010 +515 days 🔍
11/10/2010 +33 days 🔍
11/12/2010 +2 days 🔍
11/12/2010 +0 days 🔍
11/14/2010 +2 days 🔍
11/29/2010 +15 days 🔍
11/30/2010 +1 days 🔍
03/19/2015 +1570 days 🔍
09/29/2021 +2386 days 🔍

Sourcesinfo

Product: php.org

Advisory: 49687
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-3870 (🔍)
OVAL: 🔍

SecurityTracker: 1024797 - PHP Validation Flaw in utf8_decode() Permits Cross-Site Scripting Attacks and Lets Remote Users Inject SQL Commands
Vulnerability Center: 28153 - PHP before 5.3.4 Remote SQL Injection or Cross Site Scripting Vulnerability via a Crafted String, Medium
SecurityFocus: 44605 - PHP 'xml_utf8_decode()' UTF-8 Input Validation Vulnerability
Secunia: 42410 - Red Hat update for php, Moderately Critical
Vupen: ADV-2010-3081

See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 09/29/2021 02:16
Changes: 03/19/2015 14:37 (64), 03/09/2017 08:08 (18), 09/29/2021 02:00 (3), 09/29/2021 02:08 (1), 09/29/2021 02:16 (2)
Complete: 🔍

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