Medium severity · published Apr 27, 2022
CVE-2022-24888
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform
4.3
CVSS
1.3%
EPSS
No
On KEV
Description
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. Prior to versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1, it is possible to create files and folders that have leading and trailing \n, \r, \t, and \v characters. The server rejects files and folders that have these characters in the middle of their names, so this might be an opportunity for injection. This issue is fixed in versions 20.0.14.4, 21.0.8, 22.2.4, and 23.0.1. There are currently no known workarounds.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
before 20.0.14.4; 21.0.0 before 21.0.8; 22.0.0 before 22.2.4; 23.0.0 before 23.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-24888
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-24888
Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-w3h6-p64h-q9jp
Patch
https://github.com/nextcloud/server/pull/29895
Permissions Required
https://hackerone.com/reports/1402249
Third Party Advisory
https://security.gentoo.org/glsa/202208-17
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