Plone up to 2.5.5 input validation

EntryHistoryDiffjsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

A vulnerability was found in Plone up to 2.5.5 (Content Management System). It has been classified as problematic. This affects an unknown code. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

Plone 4.1.3 and earlier computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.

The weakness was disclosed 12/29/2011 by Alexander Klink with n.runs AG as confirmed advisory (CERT.org). It is possible to read the advisory at kb.cert.org. This vulnerability is uniquely identified as CVE-2011-4462 since 11/17/2011. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11994.

The vulnerability is also documented in the vulnerability database at X-Force (72018). The entries 59888, 59852, 59851 and 59850 are pretty similar.

Productinfo

Type

Content Management System

Name

Plone

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

11/17/2011 🔍
12/29/2011 +42 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
12/29/2011 +0 days 🔍
01/08/2012 +10 days 🔍
03/23/2015 +1170 days 🔍
04/09/2017 +748 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Researcher: Alexander Klink
Organization: n.runs AG
Status: Confirmed

CVE: CVE-2011-4462 (🔍)
X-Force: 72018
Vulnerability Center: 34183 - Plone 4.1.3 and Earlier Hash Collision Remote DoS Vulnerability, Medium
SecurityFocus: 51195 - Plone Hash Collision Denial Of Service Vulnerability
Secunia: 47406 - Plone Web Form Hash Collision Denial of Service Vulnerability, Less Critical

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 04/09/2017 13:16
Changes: 03/23/2015 16:50 (52), 04/09/2017 13:16 (15)
Complete: 🔍