Zulip Server insufficient authorization for changing bot roles
CVE-2022-31168

5.4MEDIUM

Key Information:

Vendor

Zulip

Status
Zulip
Vendor
CVE Published:
22 July 2022

What is CVE-2022-31168?

Zulip is an open source team chat tool. Due to an incorrect authorization check in Zulip Server 5.4 and earlier, a member of an organization could craft an API call that grants organization administrator privileges to one of their bots. The vulnerability is fixed in Zulip Server 5.5. Members who don’t own any bots, and lack permission to create them, can’t exploit the vulnerability. As a workaround for the vulnerability, an organization administrator can restrict the Who can create bots permission to administrators only, and change the ownership of existing bots.

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Affected Version(s)

zulip < 5.5

References

https://github.com/zulip/zulip/security/advisories/GHSA-c...
x_refsource_CONFIRM
https://github.com/zulip/zulip/commit/751b2a03e565e9eb02f...
x_refsource_MISC
https://github.com/zulip/zulip/releases/tag/5.5
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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