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CVE-2021-28544— Apache Subversion SVN authz protected copyfrom paths regression

Quick assessment

Affected
Apache Software Foundation Apache Subversion
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.

Apache Subversion是美国阿帕奇（Apache）基金会的一套开源的版本控制系统。该系统可兼容并发版本系统(CVS)。 Apache Subversion 1.14.1 之前版本存在信息泄露漏洞，该漏洞源于服务器暴露了应该根据配置的基于路径的授权 (authz) 规则隐藏的“copyfrom”路径。攻击者利用该漏洞可以看到原始节点的“copyfrom”路径。

AI Predicted 5.3 Difficulty: Trivial EPSS 2.79% · P86

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery
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I. Basic Information for CVE-2021-28544

Vulnerability Information
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Vulnerability Title
Apache Subversion SVN authz protected copyfrom paths regression
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Subversion SVN authz protected copyfrom paths regression Subversion servers reveal 'copyfrom' paths that should be hidden according to configured path-based authorization (authz) rules. When a node has been copied from a protected location, users with access to the copy can see the 'copyfrom' path of the original. This also reveals the fact that the node was copied. Only the 'copyfrom' path is revealed; not its contents. Both httpd and svnserve servers are vulnerable.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Subversion 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Subversion是美国阿帕奇（Apache）基金会的一套开源的版本控制系统。该系统可兼容并发版本系统(CVS)。 Apache Subversion 1.14.1 之前版本存在信息泄露漏洞，该漏洞源于服务器暴露了应该根据配置的基于路径的授权 (authz) 规则隐藏的“copyfrom”路径。攻击者利用该漏洞可以看到原始节点的“copyfrom”路径。
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
Apache Software Foundation Apache Subversion 1.10.0 to 1.14.1 -

II. Public POCs for CVE-2021-28544

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III. Intelligence Information for CVE-2021-28544

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Vendor Advisories for CVE-2021-28544 (3)

Mailing List Discussions for CVE-2021-28544 (3)

Same Patch Batch · Apache Software Foundation · 2022-04-12 · 3 CVEs total

CVE-2021-31805 Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes,
CVE-2022-24070 Apache Subversion mod_dav_svn is vulnerable to memory corruption

IV. Related Vulnerabilities

Same product: Apache Subversion
Same vendor: Apache Software Foundation
Same weakness: CWE-200

V. Comments for CVE-2021-28544

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