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Medium severity · published Jul 12, 2021
CVE-2021-32734
Nextcloud Server is a Nextcloud package that handles data storage
5.3
CVSS
1.4%
EPSS
No
On KEV
Description
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.011, and 21.0.3, the Nextcloud Text application shipped with Nextcloud Server returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, one may disable the Nextcloud Text application in Nextcloud Server app settings.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 19.0.13; 20.0.0 before 20.0.11; 21.0.0 before 21.0.3 · source: NVD
Affected product
NS
Nextcloud Server
Nextcloud
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-32734
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-32734
Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6hf5-c2c4-2526
Patch
https://github.com/nextcloud/text/pull/1695
Permissions Required
https://hackerone.com/reports/1246721
Third Party Advisory
https://security.gentoo.org/glsa/202208-17
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