VDB-157008 · CVE-2019-20878 · GCVE-0-2019-20878

Mattermost Server up to 4.10.7/5.7.2/5.8.0 Email information disclosure

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.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in Mattermost Server up to 4.10.7/5.7.2/5.8.0. Impacted is an unknown function of the component Email Handler. The manipulation results in information disclosure. This vulnerability was named CVE-2019-20878. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Mattermost Server up to 4.10.7/5.7.2/5.8.0. Affected is an unknown code block of the component Email Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. Changes, within the application, to e-mail addresses are mishandled.

The weakness was presented 06/19/2020 (Website). The advisory is shared for download at mattermost.com. This vulnerability is traded as CVE-2019-20878 since 06/19/2020. The exploitability is told to be easy. It is possible to launch the attack remotely. The requirement for exploitation is a authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 4.10.8, 5.7.3, 5.8.1 or 5.9.0 eliminates this vulnerability.

See VDB-156956, VDB-156957, VDB-156958 and VDB-156959 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Groupware Software

Name

Mattermost Server

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: Mattermost Server 4.10.8/5.7.3/5.8.1/5.9.0

Timelineinfo

06/19/2020 🔍
06/19/2020 +0 days 🔍
06/20/2020 +1 days 🔍
10/25/2020 +127 days 🔍

Sourcesinfo

Advisory: mattermost.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-20878 (🔍)
GCVE (CVE): GCVE-0-2019-20878
GCVE (VulDB): GCVE-100-157008
See also: 🔍

Entryinfo

Created: 06/20/2020 07:59
Updated: 10/25/2020 18:38
Changes: 06/20/2020 07:59 (39), 06/20/2020 08:04 (17), 10/25/2020 18:38 (1)
Complete: 🔍
Cache ID: 216::103

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