CVEs / CVE-2022-37042
CVE-2022-37042: Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability
- Known exploited in the CISA KEV catalog since 11 Aug 2022
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 92% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2022-37042
Summary
Synacor Zimbra Collaboration Suite (ZCS) contains an authentication bypass vulnerability in MailboxImportServlet. This vulnerability was chained with CVE-2022-27925 which allows for unauthenticated remote code execution.
Description
Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. By bypassing authentication (i.e., not having an authtoken), an attacker can upload arbitrary files to the system, leading to directory traversal and remote code execution. NOTE: this issue exists because of an incomplete fix for CVE-2022-27925.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 11 Aug 2022 |
|---|---|
| Due date for US federal agencies | 1 Sep 2022 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-22 |
References
- CVE-2022-37042 on NVD
- CVE-2022-37042 in the CISA KEV catalog
- https://blog.zimbra.com/2022/08/authentication-bypass-in-mailboximportservlet-vulnerability/ (cited by CISA)
- CVE-2022-37042 on OSV
- http://packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.html Exploit, Third Party Advisory, VDB Entry
- https://wiki.zimbra.com/wiki/Security_Center Patch, Vendor Advisory
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-37042 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.