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CVE-2020-26255— PHP Phar archives could be uploaded and executed in Kirby

Quick assessment

Affected
getkirby kirby
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.

Kirby是一套基于文件的内容管理系统（CMS）。 Kirby 2.5.14之前版本存在安全漏洞，该漏洞源于具有完全访问Kirby面板权限的编辑器可以上传一个PHP .phar文件并在服务器上执行它。如果您的一组经过身份验证的面板用户中可能有潜在的攻击者可利用该漏洞，

CVSS 6.8 · Medium EPSS 1.49% · P73

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2020-26255

Vulnerability Information
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Vulnerability Title
PHP Phar archives could be uploaded and executed in Kirby
Source: CVE Program / CVE List V5
Vulnerability Description
Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Kirby 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kirby是一套基于文件的内容管理系统（CMS）。 Kirby 2.5.14之前版本存在安全漏洞，该漏洞源于具有完全访问Kirby面板权限的编辑器可以上传一个PHP .phar文件并在服务器上执行它。如果您的一组经过身份验证的面板用户中可能有潜在的攻击者可利用该漏洞，
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
getkirby kirby < 3.4.5 -

II. Public POCs for CVE-2020-26255

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III. Intelligence Information for CVE-2020-26255

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Patches & Fixes for CVE-2020-26255 (2)

Vendor Advisories for CVE-2020-26255 (1)

Other References for CVE-2020-26255 (3)

IV. Related Vulnerabilities

Same product: kirby
Same vendor: getkirby
Same weakness: CWE-434

V. Comments for CVE-2020-26255

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