PT-2021-21895 · Mattermost · Mattermost

Thesecuritydev · Published 2021-12-17 · Updated 2024-03-06 · CVE-2021-37863

Positive Technologies (AI Summary)

CVSS v3.1

5.7

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Mattermost versions 6.0 and earlier

Description: The issue arises from insufficient validation of parameters during post creation, allowing authenticated attackers to cause a client-side crash of the web application via a maliciously crafted post.

Recommendations: For Mattermost versions 6.0 and earlier, update to a version later than 6.0 to resolve the issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BIT-MATTERMOST-2021-37863

CVE-2021-37863

Affected Products

Mattermost

References · 6

• https://osv.dev/vulnerability/CVE-2021-37863 · Vendor Advisory
• https://mattermost.com/security-updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-37863 · Security Note
• https://osv.dev/vulnerability/BIT-mattermost-2021-37863 · Vendor Advisory
• https://t.me/cibsecurity/34210 · Telegram Post
• https://hackerone.com/reports/1253732 · Note