CVE-2022-27925
Synacor — Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload Vulnerability
Synacor · CWE-22 — Path traversal · in CISA KEV since 2022-08-11
EVRS 90 of 100 Immediate
Patch Immediately
Rank 138 of 2,960 tracked
Why it scores 90
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and associated with known ransomware campaigns.
- CISA KEVApplied
- RansomwareApplied
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
No fixed version identified yetCISA required action
- blog.zimbra.com/…/authentication-bypass-in-mailboximportservlet-vulnerability
- nvd.nist.gov/…/CVE-2022-27925
Affected versions
- zimbra collaboration suite
8.8.159.0.0
Remediation
Apply updates per vendor instructions.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 7.2 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.987 (99.92nd pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Known | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-09-01 · KEV since 2022 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.2 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDZimbra Collaboration (aka ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. An authenticated user with administrator rights has the ability to upload arbitrary files to the system, leading to directory traversal.
What CISA says to do
- blog.zimbra.com/…/authentication-bypass-in-mailboximportservlet-vulnerability
- nvd.nist.gov/…/CVE-2022-27925
Public module
Metasploit lists a public excellent-rank module for this CVE: Zip Path Traversal in Zimbra (mboximport) (CVE-2022-27925) (linux/http/zimbra_mboximport_cve_2022_27925). A module existing is not the same as active exploitation; see metasploit.com.