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CVE-2021-41279— Zip Slip Vulnerability in BaserCMS

Quick assessment

Affected
baserproject basercms
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.

baserCMS是baserCMS（Basercms）团队的一套企业级内容管理系统（CMS）。 BaserCMS 存在路径遍历漏洞，具有上传权限的用户可以上传能够在主机操作系统上进行路径遍历的精心制作的 zip 文件。

CVSS 7.7 · High EPSS 1.62% · P75

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation
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I. Basic Information for CVE-2021-41279

Vulnerability Information
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Vulnerability Title
Zip Slip Vulnerability in BaserCMS
Source: CVE Program / CVE List V5
Vulnerability Description
BaserCMS is an open source content management system with a focus on Japanese language support. In affected versions users with upload privilege may upload crafted zip files capable of path traversal on the host operating system. This is a vulnerability that needs to be addressed when the management system is used by an unspecified number of users. If you are eligible, please update to the new version as soon as possible.
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
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
baserCMS 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
baserCMS是baserCMS（Basercms）团队的一套企业级内容管理系统（CMS）。 BaserCMS 存在路径遍历漏洞，具有上传权限的用户可以上传能够在主机操作系统上进行路径遍历的精心制作的 zip 文件。
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
baserproject basercms < 4.5.3 -

II. Public POCs for CVE-2021-41279

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-41279

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Patches & Fixes for CVE-2021-41279 (1)

Vendor Advisories for CVE-2021-41279 (1)

IV. Related Vulnerabilities

Same product: basercms
Same vendor: baserproject
Same weakness: CWE-22

V. Comments for CVE-2021-41279

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