CVE-2017-0910 Missing authorization in Zulip Server
An authorized user in one realm can create accounts in other realms on multi-realm Zulip servers, enabling unauthorized access and privilege escalation.
- 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-2017-0910?
CVE-2017-0910 is a high-severity missing authorization vulnerability in Zulip Server, published on 27 Nov 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In Zulip Server before 1.7.1, on a server with multiple realms, a vulnerability in the invitation system lets an authorized user of one realm on the server create a user account on any other realm.
Which versions are affected by CVE-2017-0910?
It affects 1 product.
Products include Zulip Zulip Server.
How do I fix CVE-2017-0910?
No fix has been published for CVE-2017-0910 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-2017-0910 being exploited?
There is no known exploitation of CVE-2017-0910 in the wild and no public exploit code.
Other vulnerabilities in Zulip Server
Sources
Also known as GHSA-6r66-34x7-46rg.