CVE-2020-8133 Weak cryptography in Nextcloud Server
Weak passphrase generation in Nextcloud Server allows attackers to overwrite encrypted file blocks, compromising data integrity.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-8133?
CVE-2020-8133 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 9 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file.
Which versions are affected by CVE-2020-8133?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2020-8133?
No fix has been published for CVE-2020-8133 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-8133 being exploited?
There is no known exploitation of CVE-2020-8133 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Nextcloud Server
- CVE-2021-32802 Preview generation used third-party library not suited for user-generated content in Nextcloud server
- CVE-2023-26482 Scope of workflow operations is not validated in nextcloud server
- CVE-2018-3775 Auth bypass in Nextcloud Server
- CVE-2023-35172 Nextcloud Server password reset endpoint is not brute force protected
- CVE-2023-32320 Nextcloud Server's brute force protection allows someone to send more requests than intended
Sources
Also known as GHSA-92hg-jjmr-6gv2.