Vulnerability · Published Jul 22, 2022 · Assigned by GitHub_M

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

Medium 5.4

In plain English

A medium-severity incorrect authorization in zulip from zulip. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.8%top 42.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
zulip	zulip	< 5.5

Weakness: CWE-285, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5 x_refsource_CONFIRM
https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034 x_refsource_MISC
https://github.com/zulip/zulip/releases/tag/5.5 x_refsource_MISC