Vulnerability in 3cx
CVE-2022-28005
An issue was discovered in the 3CX Phone System Management Console prior to version 18 Update 3 FINAL. An unauthenticated attacker could abuse improperly secured access to arbitrary files on the server (via /Electron/download directory traversal in conjunction with a path component that uses backslash characters), leading to cleartext credential disclosure. Afterwards, the authenticated attacker is able to upload a file that overwrites a 3CX service binary, leading to Remote Code Execution as NT AUTHORITY\SYSTEM on Windows installations. NOTE: this issue exists because of an incomplete fix for CVE-2022-48482.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.067 (93.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.065 · newest: 0.067 · change: +0.002
Affected products
Weakness classification (CWE)
References
- www.3cx.com/blog/change-log/phone-system-change-log/ (Release Notes, Vendor Advisory)
- www.3cx.com/blog/releases/v18-update-3-final/ (Release Notes, Vendor Advisory)
- www.3cx.com/blog/releases/v18-security-hotfix/ (Release Notes, Vendor Advisory)
- medium.com/@frycos/pwning-3cx-phone-management-backends-from-the-internet-d0096…
Frequently asked questions
- What is CVE-2022-28005?
- CVE-2022-28005 is a critical-severity vulnerability in 3cx, classified under Insufficiently Protected Credentials. CVSS score: 9.8/10. Published 2022-05-06.
- How severe is CVE-2022-28005?
- Critical severity. CVSS v3 base score is 9.8 out of 10.