PT-2022-20582 · Unknown · Zulip Server

Andersk · Published 2022-07-22 · Updated 2022-07-29 · CVE-2022-31168

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Zulip Server versions 5.4 and earlier

Description The issue arises from an incorrect authorization check in Zulip Server, allowing a member of an organization to craft an API call that grants organization administrator privileges to one of their bots. Members who don’t own any bots and lack permission to create them can’t exploit this issue.

Recommendations For Zulip Server versions 5.4 and earlier, update to Zulip Server 5.5 to fix the issue. As a temporary workaround, an organization administrator can restrict the Who can create bots permission to administrators only, and change the ownership of existing bots.

Exploit

Fix

Incorrect Authorization

Improper Authorization

Weakness Enumeration

CWE-863

CWE-285

Related Identifiers

CVE-2022-31168

GHSA-C3CP-GGG5-9XW5

Affected Products

Zulip Server

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31168.json · Exploit
• https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-31168 · Security Note
• https://osv.dev/vulnerability/CVE-2022-31168 · Vendor Advisory
• https://github.com/zulip/zulip/releases/tag/5.5 · Note
• https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5 · Note
• https://t.me/cibsecurity/46792 · Telegram Post