VDB-170571 · CVE-2021-27904 · GCVE-0-2021-27904

MISP 2.4.139 SharingGroupServer.php access control

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.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in MISP 2.4.139. Impacted is an unknown function of the file app/Model/SharingGroupServer.php. Performing a manipulation results in access control. This vulnerability is identified as CVE-2021-27904. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in MISP 2.4.139. This affects some unknown functionality of the file app/Model/SharingGroupServer.php. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 03/02/2021 as ca13fee271ad126832c88896776f3050a6c06e64. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2021-27904. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

By approaching the search of inurl:app/Model/SharingGroupServer.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Name

MISP

Version

2.4.139

License

open-source

Website

Product: https://github.com/MISP/MISP/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 5.5
NVD Vector: 🔍

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/02/2021 🔍
03/02/2021 +0 days 🔍
03/02/2021 +0 days 🔍
06/23/2026 +1939 days 🔍

Sourcesinfo

Product: github.com

Advisory: ca13fee271ad126832c88896776f3050a6c06e64
Status: Not defined

CVE: CVE-2021-27904 (🔍)
GCVE (CVE): GCVE-0-2021-27904
GCVE (VulDB): GCVE-100-170571

Entryinfo

Created: 03/02/2021 13:49
Updated: 06/23/2026 05:24
Changes: 03/02/2021 13:49 (36), 03/06/2021 09:44 (2), 03/14/2021 10:32 (16), 06/23/2026 05:24 (15)
Complete: 🔍
Cache ID: 216::103