PT-2023-27602 · Mattermost · Mattermost

Vultza · Published 2023-11-27 · Updated 2023-12-01 · CVE-2023-40703

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Mattermost (affected versions not specified)

Description The issue arises from Mattermost's failure to properly limit the characters allowed in different fields of a block in Mattermost Boards. This allows an attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2023-40703

GHSA-C37R-V8JX-7CV2

Affected Products

Mattermost

References · 7

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-40703 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-40703 · Security Note
• https://osv.dev/vulnerability/GHSA-c37r-v8jx-7cv2 · Vendor Advisory
• https://github.com/mattermost/mattermost · Note
• https://t.me/cvenotify/61216 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40703 · Note