PHPBB 2.0.20 Web Proxy usercp_avatar.php avatarurl privileges management

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in PHPBB 2.0.20. It has been rated as critical. Affected by this issue is some unknown functionality of the file usercp_avatar.php of the component Web Proxy. This manipulation of the argument avatarurl causes privileges management. This vulnerability is handled as CVE-2006-4450. Additionally, an exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in PHPBB 2.0.20 (Forum Software). It has been declared as critical. Affected by this vulnerability is an unknown function of the file usercp_avatar.php of the component Web Proxy. The manipulation of the argument avatarurl with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

usercp_avatar.php in PHPBB 2.0.20, when avatar uploading is enabled, allows remote attackers to use the server as a web proxy by submitting a URL to the avatarurl parameter, which is then used in an HTTP GET request.

The weakness was released 08/29/2006 by rgod (Website). It is possible to read the advisory at secunia.com. This vulnerability is known as CVE-2006-4450 since 08/29/2006. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. By approaching the search of inurl:usercp_avatar.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 22608 (Debian DSA-1066-1 : phpbb2 - missing input sanitising), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (26537), Tenable (22608), SecurityFocus (BID 17965†) and Secunia (SA20093†). Entry connected to this vulnerability is available at VDB-29761. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.6
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 22608
Nessus Name: Debian DSA-1066-1 : phpbb2 - missing input sanitising
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/12/2006 🔍
05/16/2006 +3 days 🔍
05/20/2006 +4 days 🔍
08/29/2006 +101 days 🔍
08/29/2006 +0 days 🔍
08/29/2006 +0 days 🔍
10/14/2006 +45 days 🔍
03/12/2015 +3071 days 🔍
08/03/2018 +1240 days 🔍

Sourcesinfo

Product: phpbb.com

Advisory: secunia.com⛔
Researcher: rgod
Status: Confirmed

CVE: CVE-2006-4450 (🔍)
GCVE (CVE): GCVE-0-2006-4450
GCVE (VulDB): GCVE-100-32011
X-Force: 26537 - phpBB avatar security bypass
SecurityFocus: 17965 - PHPBB Unauthorized HTTP Proxy Vulnerability
Secunia: 20093 - phpBB "Upload Avatar from a URL" Weakness and PHP Code Execution, Less Critical

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

Entryinfo

Created: 03/12/2015 15:51
Updated: 08/03/2018 06:14
Changes: 03/12/2015 15:51 (63), 08/03/2018 06:14 (10)
Complete: 🔍
Cache ID: 216:F95:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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