Cross-site scripting in Zulip Server - CVE-2018-9990
Published: April 18, 2018 / Updated: May 21, 2018
Vulnerability identifier: #VU14656
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2018-9990
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
Vulnerability allows a remote attacker to perform XSS attacks.
The vulnerability is caused by an input validation error related to stream names in topic typeahead. A remote attacker can create a specially specially crafted web page, trick the victim intop opening it and execute arbitrary HTML and script code in victim's browser.
Affected software
Zulip Server
How to mitigate CVE-2018-9990
Install update from vendor's website.
Zulip Server - update to 1.7.2