Medium severity · published Apr 12, 2022
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…
4.3
CVSS
2.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
12.0 before 12.5 · source: NVD
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
FE
Fedora · Fedoraproject
35; 36; 35; 36 · source: NVD
SU
Subversion · Apache
1.10.0 through 1.14.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28544
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28544
Mailing List
http://seclists.org/fulldisclosure/2022/Jul/18
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PZ4ARNGLMGYBKYDX2B7DRBNMF6EH3A6R/
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJPMCWCGWBN3QWCDVILWQWPC75RR67LT/
Exploit
https://subversion.apache.org/security/CVE-2021-28544-advisory.txt
Third Party Advisory
https://support.apple.com/kb/HT213345
Third Party Advisory
https://www.debian.org/security/2022/dsa-5119
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