CVE-2022-21706
Zulip Multi-Organization Access Control Bypass Vulnerability
Description
Zulip is an open-source team collaboration tool with topic-based threading. Zulip Server version 2.0.0 and above are vulnerable to insufficient access control with multi-use invitations. A Zulip Server deployment which hosts multiple organizations is vulnerable to an attack where an invitation created in one organization (potentially as a role with elevated permissions) can be used to join any other organization. This bypasses any restrictions on required domains on users' email addresses, may be used to gain access to organizations which are only accessible by invitation, and may be used to gain access with elevated privileges. This issue has been patched in release 4.10. There are no known workarounds for this issue. ### Patches _Has the problem been patched? What versions should users upgrade to?_ ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ ### References _Are there any links users can visit to find out more?_ ### For more information If you have any questions or comments about this advisory, you can discuss them on the [developer community Zulip server](https://zulip.com/developer-community/), or email the [Zulip security team](mailto:[email protected]).
INFO
Published Date :
Feb. 26, 2022, 12:15 a.m.
Last Modified :
July 24, 2023, 1:47 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2022-21706 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-21706.
| URL | Resource |
|---|---|
| https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/ | Vendor Advisory |
| https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706 | Vendor Advisory |
| https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e | Patch Third Party Advisory |
| https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC
cve-2020-
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-21706 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-21706 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Jul. 24, 2023
Action Type Old Value New Value Removed CWE NIST CWE-863 Added CWE NIST NVD-CWE-Other -
Initial Analysis by [email protected]
Mar. 08, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/ No Types Assigned https://blog.zulip.com/2022/02/25/zulip-cloud-invitation-vulnerability/ Vendor Advisory Changed Reference Type https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706 No Types Assigned https://blog.zulip.com/2022/02/25/zulip-server-4-10-security-release/#cve-2022-21706 Vendor Advisory Changed Reference Type https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e No Types Assigned https://github.com/zulip/zulip/commit/88917019f03860609114082cdc0f31a561503f9e Patch, Third Party Advisory Changed Reference Type https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc No Types Assigned https://github.com/zulip/zulip/security/advisories/GHSA-6xmj-2wcm-p2jc Third Party Advisory Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (excluding) 4.10.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-21706 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-21706
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.44 }} 0.04%
score
0.75231
percentile