Reverse Tabnabbing in Zulip Server - CVE-2020-9444
Published: April 28, 2020
Vulnerability identifier: #VU27392
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-9444
CWE-ID: CWE-1022
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to modify certain properties on the affected system.
The vulnerability exist due to Reverse Tabnabbing in the Markdown functionality. A remote attacker can modify the location property to automatically redirect the user to a malicious site.
Affected software
Zulip Server
How to mitigate CVE-2020-9444
Install updates from vendor's website.
Zulip Server - update to 2.1.3