Medium severity · published Jan 18, 2024
CVE-2024-22402
Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app allowlist
5.4
CVSS
0.5%
EPSS
No
On KEV
Description
Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users were able to load the first page of apps they were actually not allowed to access. Depending on the selection of apps installed this may present a permissions bypass. It is recommended that the Guests app is upgraded to 2.4.1, 2.5.1 or 3.0.1. There are no known workarounds for this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
security-advisories · nextcloud
>= 2.4.0, < 2.4.1; >= 2.5.0, < 2.5.1; >= 3.0.0, < 3.0.1 · source: vendor
GU
Guests · Nextcloud
before 2.4.1; 2.5.0; 3.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-22402
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-22402
Patch
https://github.com/nextcloud/guests/pull/1082
Vendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v3qw-7vgv-2fxj
Permissions Required
https://hackerone.com/reports/2251074
More from security-advisories
9.8
CVE-2024-22212
Nextcloud global site selector authentication bypass
9.8
CVE-2023-49792
Bruteforce protection can be bypassed with misconfigured proxy
9.8
CVE-2023-48307
Nextcloud Mail app vulnerable to Server-Side Request Forgery
9.8
CVE-2023-48306
Nextcloud Server DNS pin middleware can be tricked into DNS rebinding allowing SSRF
9.8
CVE-2023-32074
Nextcloud user_oidc app is missing brute force protection