Mattermost Server up to 5.9.6/5.15.3/5.16.3/5.17.1 Configuration File permissions
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.1 | $0-$5k | 0.00 |
A vulnerability has been found in Mattermost Server up to 5.9.6/5.15.3/5.16.3/5.17.1 and classified as critical. Affected by this vulnerability is an unknown code block of the component Configuration File Handler. The manipulation with an unknown input leads to a permissions vulnerability. The CWE definition for the vulnerability is CWE-281. The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. There are weak permissions for configuration files.
The weakness was presented 06/19/2020 (Website). The advisory is shared at mattermost.com. This vulnerability is known as CVE-2019-20843 since 06/19/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1222 for this issue.
Upgrading to version 5.9.7, 5.15.4, 5.16.4, 5.17.2 or 5.18.0 eliminates this vulnerability.
See 156956, 156957, 156958 and 156959 for similar entries.
Product
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.4VulDB Meta Temp Score: 7.2
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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: 🔍
Exploiting
Class: PermissionsCWE: CWE-281 / CWE-266
ATT&CK: T1222
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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Mattermost Server 5.9.7/5.15.4/5.16.4/5.17.2/5.18.0
Timeline
06/19/2020 🔍06/19/2020 🔍
06/19/2020 🔍
10/25/2020 🔍
Sources
Advisory: mattermost.comStatus: Not defined
Confirmation: 🔍
CVE: CVE-2019-20843 (🔍)
See also: 🔍
Entry
Created: 06/19/2020 22:15Updated: 10/25/2020 15:30
Changes: 06/19/2020 22:15 (39), 06/19/2020 22:20 (17), 10/25/2020 15:30 (1)
Complete: 🔍
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