What is CVE-2017-0910?

CVE-2017-0910 is a high-severity vulnerability in Zulip Server, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2017-11-27.

How severe is CVE-2017-0910?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Zulip Server

CVE-2017-0910

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.

Vulnerability class: Broken Access Control

EPSS: 0.002 (47.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zulip Server — versions before 1.7.1
Zulip Zulip_server

Weakness classification (CWE)

CWE-863 — Incorrect Authorization
CWE-287 — Improper Authentication

References

support@hackerone.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
support@hackerone.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2017-0910?: CVE-2017-0910 is a high-severity vulnerability in Zulip Server, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2017-11-27.
How severe is CVE-2017-0910?: High severity. CVSS v3 base score is 8.8 out of 10.