VDB-180727 · CVE-2021-33199 · GCVE-0-2021-33199

Expression Engine up to 6.0.2 Addons/file/mod.file.php get input validation

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

Summaryinfo

A vulnerability, which was classified as critical, has been found in Expression Engine up to 6.0.2. This affects the function get of the file Addons/file/mod.file.php. This manipulation causes input validation. This vulnerability is tracked as CVE-2021-33199. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Expression Engine up to 6.0.2. It has been declared as critical. Affected by this vulnerability is the function get of the file Addons/file/mod.file.php. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 08/13/2021. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2021-33199. Technical details of the vulnerability are known, but there is no available exploit.

By approaching the search of inurl:Addons/file/mod.file.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 6.0.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Expression Engine

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined
Google Hack: 🔍

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Expression Engine 6.0.3
Patch: github.com

Timelineinfo

05/19/2021 🔍
08/13/2021 +86 days 🔍
08/13/2021 +0 days 🔍
08/17/2021 +4 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-33199 (🔍)
GCVE (CVE): GCVE-0-2021-33199
GCVE (VulDB): GCVE-100-180727

Entryinfo

Created: 08/13/2021 06:30
Updated: 08/17/2021 11:10
Changes: 08/13/2021 06:30 (40), 08/17/2021 11:10 (2)
Complete: 🔍
Cache ID: 216::103