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CVE-2023-28853— Mastodon's blind LDAP injection in login allows the attacker to leak arbitrary attributes from LDAP database

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 2.5.0版本及之后版本存在注入漏洞，该漏洞源于在登录时的LDAP查询不安全。攻击者利用该漏洞通过LDAP注入攻击来泄露LDAP数据库的任意属性。

CVSS 7.7 · High EPSS 1.28% · P69

Possible ATT&CK Techniques 1 AI

T1115 · Clipboard Data
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I. Basic Information for CVE-2023-28853

Vulnerability Information
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Vulnerability Title
Mastodon's blind LDAP injection in login allows the attacker to leak arbitrary attributes from LDAP database
Source: CVE Program / CVE List V5
Vulnerability Description
Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Starting in version 2.5.0 and prior to versions 3.5.8, 4.0.4, and 4.1.2, the LDAP query made during login is insecure and the attacker can perform LDAP injection attack to leak arbitrary attributes from LDAP database. This issue is fixed in versions 3.5.8, 4.0.4, and 4.1.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
LDAP查询中使用的特殊元素转义处理不恰当(LDAP注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Mastodon 注入漏洞
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 2.5.0版本及之后版本存在注入漏洞，该漏洞源于在登录时的LDAP查询不安全。攻击者利用该漏洞通过LDAP注入攻击来泄露LDAP数据库的任意属性。
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 >= 2.5.0, < 3.5.8 -

II. Public POCs for CVE-2023-28853

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III. Intelligence Information for CVE-2023-28853

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Patches & Fixes for CVE-2023-28853 (2)

Vendor Advisories for CVE-2023-28853 (1)

Mailing List Discussions for CVE-2023-28853 (1)

Other References for CVE-2023-28853 (4)

IV. Related Vulnerabilities

Same product: mastodon
Same vendor: mastodon
Same weakness: CWE-90

V. Comments for CVE-2023-28853

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