PT-2025-4190 · Mattermost+1 · Mattermost+1
C0Rydoras
·
Published
2025-01-15
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Updated
2025-01-30
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CVE-2025-21088
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Mattermost versions 9.11.x through 9.11.5
Mattermost versions 10.0.x through 10.0.3
Mattermost versions 10.1.x through 10.1.3
Mattermost versions 10.2.x through 10.2.0
Description
The issue arises from the failure to properly validate the style of proto supplied to an action's style in post.props.attachments. This allows an attacker to crash the frontend via crafted malicious input.
Recommendations
For versions 9.11.x through 9.11.5, consider disabling the processing of attachments in post.props until a patch is available.
For versions 10.0.x through 10.0.3, restrict access to the post.props.attachments feature to minimize the risk of exploitation.
For versions 10.1.x through 10.1.3, avoid using the style attribute in post.props.attachments until the issue is resolved.
For versions 10.2.x through 10.2.0, as a temporary workaround, consider disabling the frontend when handling crafted malicious input until a patch is available.
Fix
DoS
Incorrect Type Conversion or Cast
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Weakness Enumeration
Related Identifiers
Affected Products
Mattermost
Suse