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CVE-2020-5281— LDAP connector injection in Perun

Quick assessment

Affected
CESNET perun
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.

Perun是一套身份验证和访问管理系统。 Perun 3.9.1之前版本中存在注入漏洞。远程攻击者可通过使用VO或组管理器修改LDAP extSource配置利用该漏洞从Perun LDAP中检索所有内容。

CVSS 6.2 · Medium EPSS 1.36% · P71

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials
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I. Basic Information for CVE-2020-5281

Vulnerability Information
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Vulnerability Title
LDAP connector injection in Perun
Source: CVE Program / CVE List V5
Vulnerability Description
In Perun before version 3.9.1, VO or group manager can modify configuration of the LDAP extSource to retrieve all from Perun LDAP. Issue is fixed in version 3.9.1 by sanitisation of the input.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:L/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
Perun 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Perun是一套身份验证和访问管理系统。 Perun 3.9.1之前版本中存在注入漏洞。远程攻击者可通过使用VO或组管理器修改LDAP extSource配置利用该漏洞从Perun LDAP中检索所有内容。
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
CESNET perun < 3.9.1 -

II. Public POCs for CVE-2020-5281

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III. Intelligence Information for CVE-2020-5281

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Patches & Fixes for CVE-2020-5281 (1)

Vendor Advisories for CVE-2020-5281 (1)

IV. Related Vulnerabilities

Same vendor: CESNET
Same weakness: CWE-90

V. Comments for CVE-2020-5281

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