CVE-2023-39954 user_oidc app stores client secret unencrypted in database
Attackers with database read access can steal unencrypted OIDC client secrets to impersonate the Nextcloud server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-39954?
CVE-2023-39954 is a low-severity vulnerability in nextcloud security-advisories, published on 10 Aug 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, an attacker that obtained at least read access to a snapshot of the database can impersonate the Nextcloud server towards linked servers. user_oidc 1.3.3 contains a patch. No known workarounds are available.
Weakness: CWE-311
Which versions are affected by CVE-2023-39954?
It affects 1 product.
Products include Nextcloud User Oidc.
How do I fix CVE-2023-39954?
No fix has been published for CVE-2023-39954 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-39954 being exploited?
There is no known exploitation of CVE-2023-39954 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
- CVE-2023-32074 Nextcloud user_oidc app is missing brute force protection
- CVE-2024-37312 Nextcloud user_oidc app's ID4me feature is available even when disabled
- CVE-2024-37886 Nextcloud user_oidc's ID4me does not validate signature or expiration
- CVE-2023-39953 Issuer not verified from obtained token in user_oidc
- CVE-2023-28848 CSRF protection on user_oidc login returned the expected token in case of an error
Sources
Also known as GHSA-3f92-5c8p-f6gq.