CVE-2021-32676 Session Fixation in Nextcloud Talk
Attackers can hijack user sessions in password-protected Nextcloud Talk chats due to missing session cookie rotation after authentication.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32676?
CVE-2021-32676 is a medium-severity authentication bypass vulnerability in nextcloud security-advisories, published on 16 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nextcloud Talk is a fully on-premises audio/video and chat communication service. Password protected shared chats in Talk before version 9.0.10, 10.0.8 and 11.2.2 did not rotate the session cookie after a successful authentication event. It is recommended that the Nextcloud Talk App is upgraded to 9.0.10, 10.0.8 or 11.2.2. No workarounds for this vulnerability are known to exist.
Weakness: CWE-384
Which versions are affected by CVE-2021-32676?
It affects 1 product.
Products include Nextcloud Talk.
How do I fix CVE-2021-32676?
No fix has been published for CVE-2021-32676 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-32676 being exploited?
There is no known exploitation of CVE-2021-32676 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
- CVE-2020-8180 Code injection in Nextcloud Talk
- CVE-2021-32689 Nextcloud Talk not properly disassociating users from chats after account deletion
- CVE-2023-39957 Path traversal allows tricking the Talk Android app into writing files into it's root directory
- CVE-2021-39222 XSS in Talk
- CVE-2018-3781 Cross-site scripting in nextcloud/talk
Sources
Also known as GHSA-p6h7-84v4-827r.