SSRF in Proxmox Mail Gateway
CVE-2022-35508
Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) are vulnerable to SSRF when proxying HTTP requests between pve(pmg)proxy and pve(pmg)daemon. An attacker with an unprivileged account can craft an HTTP request to achieve SSRF and file disclosure of any files on the server. Also, in Proxmox Mail Gateway, privilege escalation to the root@pam account is possible if the backup feature has ever been used, because backup files such as pmg-backup_YYYY_MM_DD_*.tgz have 0644 permissions and contain an authkey value. This is fixed in pve-http-server 4.1-3.
Vulnerability class: SSRF (Server-Side Request Forgery)
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: 0.012 (66.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: +0.000
Affected products
Weakness classification (CWE)
References
- git.proxmox.com/
- git.proxmox.com/
- git.proxmox.com/
- starlabs.sg/blog/2022/12-multiple-vulnerabilites-in-proxmox-ve--proxmox-mail-ga… (Technical Description, Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-35508?
- CVE-2022-35508 is a critical-severity vulnerability in Proxmox Mail Gateway, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2022-12-04.
- How severe is CVE-2022-35508?
- Critical severity. CVSS v3 base score is 9.8 out of 10.