CVE-2020-26029 Missing authorization in n/a
Attackers can bypass authorization checks in Zammad by manipulating the X-On-Behalf-Of header to impersonate other users and access their 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-2020-26029?
CVE-2020-26029 is a medium-severity missing authorization vulnerability in Zammad Zammad, published on 28 Dec 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Zammad before 3.4.1. There are wrong authorization checks for impersonation requests via X-On-Behalf-Of. The authorization checks are performed for the actual user and not the one given in the X-On-Behalf-Of header.
Weakness: CWE-863
Which versions are affected by CVE-2020-26029?
It affects 1 product.
Products include Zammad Zammad.
How do I fix CVE-2020-26029?
No fix has been published for CVE-2020-26029 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-2020-26029 being exploited?
There is no known exploitation of CVE-2020-26029 in the wild and no public exploit code.
Other vulnerabilities in Zammad Zammad
Sources
Also known as GHSA-rvr3-f3x4-3669.