Server-Side Request Forgery (SSRF) in Mattermost Notification - CVE-2019-1003026
Published: October 24, 2019
Vulnerability identifier: #VU22261
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-1003026
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jenkins
Affected software:
Mattermost Notification
Mattermost Notification
Detailed vulnerability description
The disclosed vulnerability allows a remote user to perform SSRF attacks.
The vulnerability exists due to missing permission check in a form validation method. A remote authenticated user with Overall/Read permission can send a specially crafted HTTP request and connect Jenkins to an attacker-specified Mattermost server and room and send a message.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
How to mitigate CVE-2019-1003026
Install updates from vendor's website.