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CVE-2021-48017— OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal via bscw.cgi

Quick assessment

Affected
OrbiTeam BSCW Server
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.

OrbiTeam BSCW Server 5.x（5.2.5 之前版本）和 7.x（7.4.4 之前版本）在主题（theme）操作的 参数中存在未认证的路径遍历漏洞。攻击者可向 发送包含 序列的 GET 请求，利用该漏洞读取本地文件（例如 ）。Shadowserver 基金会于 2023 年 10 月 22 日首次观察到该漏洞被利用的证据。

CVSS 7.5 · High
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I. Basic Information for CVE-2021-48017

Vulnerability Information
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Vulnerability Title
OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal via bscw.cgi
Source: CVE Program / CVE List V5
Vulnerability Description
OrbiTeam BSCW Server 5.x before 5.2.5 and 7.x before 7.4.4 contains an unauthenticated path traversal vulnerability in the style_name parameter of the theme operation. Attackers can send GET requests to /pub/bscw.cgi/<id>?op=theme with ../ sequences in style_name to read local files such as /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-22.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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

Affected Products

Vendor Product Affected Versions CPE Subscribe
OrbiTeam BSCW Server 5.0.0 ~ 5.2.5 -

II. Public POCs for CVE-2021-48017

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III. Intelligence Information for CVE-2021-48017

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Other References for CVE-2021-48017 (4)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2021-48017

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