CVE-2022-31168
The vulnerability is fixed in Zulip Server 5.5.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.78%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.78% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-285, CWE-863
- Affected
- zulip/zulip
- Source
- security-advisories@github.com
References
- https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034Patch, Third Party Advisory
- https://github.com/zulip/zulip/releases/tag/5.5Release Notes, Third Party Advisory
- https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5Third Party Advisory
- https://github.com/zulip/zulip/commit/751b2a03e565e9eb02ffe923b7c24ac73d604034Patch, Third Party Advisory
- https://github.com/zulip/zulip/releases/tag/5.5Release Notes, Third Party Advisory
- https://github.com/zulip/zulip/security/advisories/GHSA-c3cp-ggg5-9xw5Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.