CVE-2021-21511 Missing authorization in Avamar

High 8.1 Published 15 Feb 2021 Updated 16 Sep 2024

A remote low-privileged attacker can exploit improper authorization in the web UI to read or modify other users' backup data.

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-2021-21511?

CVE-2021-21511 is a high-severity missing authorization vulnerability in Dell Avamar, published on 15 Feb 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Dell EMC Avamar Server, versions 19.3 and 19.4 contain an Improper Authorization vulnerability in the web UI. A remote low privileged attacker could potentially exploit this vulnerability, to gain unauthorized read or modification access to other users' backup data.

Weakness: CWE-285

Which versions are affected by CVE-2021-21511?

It affects 2 products.

Products include Dell Emc Avamar Server, Dell Emc Integrated Data Protection Appliance.

How do I fix CVE-2021-21511?

No fix has been published for CVE-2021-21511 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-2021-21511 being exploited?

There is no known exploitation of CVE-2021-21511 in the wild and no public exploit code.

Sources

Also known as GHSA-2gr2-xjj5-q4ff.