Information disclosure in Apache Subversion
CVE-2021-28544
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.028 (86.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Apache Subversion
- Apache Software Foundation Subversion — versions 1.10.0 to 1.14.1
- Apple macOS
- Debian Linux — versions 10.0, 11.0
- Fedoraproject Fedora — versions 35, 36
Weakness classification (CWE)
References
- subversion.apache.org/security/CVE-2021-28544-advisory.txt (Exploit, Patch, Vendor Advisory)
- www.debian.org/security/2022/dsa-5119 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- support.apple.com/kb/HT213345 (Third Party Advisory)
- seclists.org/fulldisclosure/2022/Jul/18 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28544?
- CVE-2021-28544 is a medium-severity vulnerability in Apache Subversion, classified under Information Disclosure. CVSS score: 4.3/10. Published 2022-04-12.
- How severe is CVE-2021-28544?
- Medium severity. CVSS v3 base score is 4.3 out of 10.