CVE-2020-8297 Missing authorization in Nextcloud Deck
Attackers with duplicate identifiers can access deleted users' deck data due to insecure direct object reference in Nextcloud Deck.
- 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-2020-8297?
CVE-2020-8297 is a medium-severity missing authorization vulnerability in Nextcloud Deck, published on 23 Feb 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nextcloud Deck before 1.0.2 suffers from an insecure direct object reference (IDOR) vulnerability that permits users with a duplicate user identifier to access deck data of a previous deleted user.
Weakness: CWE-639
Which versions are affected by CVE-2020-8297?
It affects 1 product.
Products include Nextcloud Deck.
How do I fix CVE-2020-8297?
No fix has been published for CVE-2020-8297 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2020-8297 being exploited?
There is no known exploitation of CVE-2020-8297 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Deck
- CVE-2021-39225 Missing permission check on Deck API
- CVE-2020-8182 Missing authorization in Nextcloud Deck
- CVE-2021-37631 Circle can be accessed by non-Circle members in Nextcloud Deck
- CVE-2021-22913 Information disclosure in Nextcloud Deck
- CVE-2023-22469 Nextcloud Deck card vulnerable to data leak to unauthorized users via reference preview cache
Sources
Also known as GHSA-hx5m-93g9-j2jh.