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CVE-2023-36461— Mastodon vulnerable to Denial of Service through slow HTTP responses

Quick assessment

Affected
mastodon mastodon
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mastodon是一款基于ActivityPub的开源社交网络服务器。 Mastodon存在安全漏洞，该漏洞源于允许恶意服务器通过慢速攻击延长响应的持续时间，从而导致服务器无响应。

CVSS 7.5 · High EPSS 1.31% · P70
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I. Basic Information for CVE-2023-36461

Vulnerability Information
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Vulnerability Title
Mastodon vulnerable to Denial of Service through slow HTTP responses
Source: CVE Program / CVE List V5
Vulnerability Description
Mastodon is a free, open-source social network server based on ActivityPub. When performing outgoing HTTP queries, Mastodon sets a timeout on individual read operations. Prior to versions 3.5.9, 4.0.5, and 4.1.3, a malicious server can indefinitely extend the duration of the response through slowloris-type attacks. This vulnerability can be used to keep all Mastodon workers busy for an extended duration of time, leading to the server becoming unresponsive. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
Mastodon 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mastodon是一款基于ActivityPub的开源社交网络服务器。 Mastodon存在安全漏洞，该漏洞源于允许恶意服务器通过慢速攻击延长响应的持续时间，从而导致服务器无响应。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mastodon mastodon < 3.5.9 -

II. Public POCs for CVE-2023-36461

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III. Intelligence Information for CVE-2023-36461

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Patches & Fixes for CVE-2023-36461 (1)

Vendor Advisories for CVE-2023-36461 (1)

Mailing List Discussions for CVE-2023-36461 (1)

Other References for CVE-2023-36461 (3)

Same Patch Batch · mastodon · 2023-07-06 · 4 CVEs total

CVE-2023-36460 10.0 CRITICAL Mastodon vulnerable to arbitrary file creation through media attachments
CVE-2023-36459 9.3 CRITICAL Mastodon vulnerable to Cross-site Scripting through oEmbed preview cards
CVE-2023-36462 5.4 MEDIUM Mastodon's verified profile links can be formatted in a misleading way

IV. Related Vulnerabilities

Same product: mastodon
Same vendor: mastodon
Same weakness: CWE-770

V. Comments for CVE-2023-36461

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