PT-2022-27857 · Mastodon · Mastodon

Published 2022-12-04 · Updated 2025-04-24 · CVE-2022-46405

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Mastodon versions through 4.0.2

Description The issue allows attackers to cause a denial of service by creating bot accounts that follow attacker-controlled accounts on certain other servers associated with a wildcard DNS A record, resulting in uncontrolled recursion of attacker-generated messages.

Recommendations For Mastodon versions through 4.0.2, consider disabling the feature that allows bot accounts to follow other accounts until a patch is available. Restrict access to the Sidekiq pull queue to minimize the risk of exploitation. Avoid using wildcard DNS A records for servers associated with Mastodon instances until the issue is resolved.

Exploit

Fix

DoS

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

BIT-MASTODON-2022-46405

CVE-2022-46405

Affected Products

Mastodon

References · 8

• 🔥 https://hackmd.io/rD9nsTz1QeuPT-erxqjY-A · Exploit
• https://osv.dev/vulnerability/CVE-2022-46405 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-46405 · Security Note
• https://osv.dev/vulnerability/BIT-mastodon-2022-46405 · Vendor Advisory
• https://t.me/cvenotify/119708 · Telegram Post
• https://t.me/cvenotify/39096 · Telegram Post
• https://t.me/cibsecurity/53958 · Telegram Post
• https://borg.social/notes/98bcoo2t1n · Note