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githubGitHub Advisory DatabaseGHSA-8F99-G2PJ-X8W3
HistoryApr 26, 2024 - 9:30 a.m.

Mattermost crashes web clients via a malformed custom status

2024-04-2609:30:34
CWE-754
GitHub Advisory Database
github.com
12
mattermost
web client
crash
json parsing
custom status
security vulnerability

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

AI Score

6.6

Confidence

High

EPSS

0

Percentile

9.0%

Mattermost versions 9.6.0, 9.5.x before 9.5.3, 9.4.x before 9.4.5, and 8.1.x before 8.1.12 fail to handle JSON parsing errors in custom status values, which allows an authenticated attacker to crash other users’ web clients via a malformed custom status.

Affected configurations

Vulners
Node
mattermostmattermost-serverRange9.6.0-rc19.6.0
OR
mattermostmattermost-serverRange9.5.09.5.2
OR
mattermostmattermost-serverRange9.4.09.4.4
OR
mattermostmattermost-serverRange8.1.08.1.11
VendorProductVersionCPE
mattermostmattermost-server*cpe:2.3:a:mattermost:mattermost-server:*:*:*:*:*:*:*:*

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

AI Score

6.6

Confidence

High

EPSS

0

Percentile

9.0%