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CVE-2023-42451— Mastodon Invalid Domain Name Normalization vulnerability

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 3.5.14之前、4.0.10之前、4.1.8之前、4.2.0-rc2之前版本存在安全漏洞，该漏洞源于在某些情况下，攻击者可以利用域名规范化中的缺陷来欺骗不属于他们的域。

CVSS 7.4 · High EPSS 0.57% · P45
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I. Basic Information for CVE-2023-42451

Vulnerability Information
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Vulnerability Title
Mastodon Invalid Domain Name Normalization vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0-rc2, under certain circumstances, attackers can exploit a flaw in domain name normalization to spoof domains they do not own. Versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0-rc2 contain a patch for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确的解析名称或索引
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 3.5.14之前、4.0.10之前、4.1.8之前、4.2.0-rc2之前版本存在安全漏洞，该漏洞源于在某些情况下，攻击者可以利用域名规范化中的缺陷来欺骗不属于他们的域。
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 < 3.5.14 -

II. Public POCs for CVE-2023-42451

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III. Intelligence Information for CVE-2023-42451

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Patches & Fixes for CVE-2023-42451 (1)

Vendor Advisories for CVE-2023-42451 (1)

Same Patch Batch · mastodon · 2023-09-19 · 3 CVEs total

CVE-2023-42452 6.1 MEDIUM Mastodon vulnerable to Stored XSS through the translation feature
CVE-2023-42450 5.4 MEDIUM Mastodon Server-Side Request Forgery vulnerability

IV. Related Vulnerabilities

Same product: mastodon
Same vendor: mastodon
Same weakness: CWE-706

V. Comments for CVE-2023-42451

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