VDB-188192 · CVE-2021-43807 · GHSA-j4mm-7pj3-jf7v

Opencast up to 9.9 HTTP GET Request authentication spoofing

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.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Opencast up to 9.9 and classified as critical. This issue affects some unknown processing of the component HTTP GET Request Handler. Such manipulation leads to authentication spoofing. This vulnerability is uniquely identified as CVE-2021-43807. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Opencast up to 9.9. Affected by this issue is an unknown code of the component HTTP GET Request Handler. The manipulation with an unknown input leads to a authentication spoofing vulnerability. Using CWE to declare the problem leads to CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 12/14/2021 as GHSA-j4mm-7pj3-jf7v. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-43807. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 9.10 or 10.0 eliminates this vulnerability. Applying the patch 59cb6731067283e54f15462be38b6117d8b9ea8b 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Opencast

Version

License

open-source

Website

Product: https://github.com/opencast/opencast/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

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: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Opencast 9.10/10.0
Patch: 59cb6731067283e54f15462be38b6117d8b9ea8b

Timelineinfo

11/16/2021 🔍
12/14/2021 +28 days 🔍
12/14/2021 +0 days 🔍
12/17/2021 +3 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-j4mm-7pj3-jf7v
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-43807 (🔍)
GCVE (CVE): GCVE-0-2021-43807
GCVE (VulDB): GCVE-100-188192

Entryinfo

Created: 12/14/2021 21:04
Updated: 12/17/2021 09:49
Changes: 12/14/2021 21:04 (50), 12/17/2021 09:49 (3)
Complete: 🔍
Cache ID: 216::103