PT-2021-22406 · Bookstack · Bookstack

Published 2021-11-13 · Updated 2021-11-17 · CVE-2021-3915

Positive Technologies (AI Summary)

CVSS v3.1

7.6

High

Base vector

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

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

Description The issue concerns an Unrestricted Upload of File with Dangerous Type. This means that an attacker could potentially upload malicious files to the system, which could lead to various security problems. No information is provided about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

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

Exploit

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2021-3915

GHSA-W2F4-HXPM-MQ98

Affected Products

Bookstack

References · 7

• 🔥 https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079 · Exploit
• https://github.com/bookstackapp/bookstack/commit/ae155d67454d6b9f6c93b2bb457aaa4b2eb1a9ed · Patch
• https://osv.dev/vulnerability/CVE-2021-3915 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3915 · Security Note
• https://osv.dev/vulnerability/GHSA-w2f4-hxpm-mq98 · Vendor Advisory
• https://github.com/BookStackApp/BookStack · Note
• https://t.me/cibsecurity/32372 · Telegram Post