CVE-2021-21436 Agent is able to link customer's Config Items without permission
Agents can view and link customer Config Items without proper permissions, allowing unauthorized data access and modification in OTRS ITSM.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-21436?
CVE-2021-21436 is a low-severity missing authorization vulnerability in OTRSCIsInCustomerFrontend, published on 8 Feb 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Agents are able to see and link Config Items without permissions, which are defined in General Catalog. This issue affects: OTRS AG OTRSCIsInCustomerFrontend 7.0.x version 7.0.14 and prior versions.
Which versions are affected by CVE-2021-21436?
It affects 1 product.
Products include Otrs Cis in Customer Frontend.
How do I fix CVE-2021-21436?
No fix has been published for CVE-2021-21436 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-2021-21436 being exploited?
There is no known exploitation of CVE-2021-21436 in the wild and no public exploit code.
Sources
Also known as GHSA-5gvf-qj79-739q, UBUNTU-CVE-2021-21436.