CVE-2022-35508: SSRF
First published: Sun Dec 04 2022(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Proxmox Mail Gateway | ||
| Proxmox VE | <4.1-3 | |
| Proxmox VE |
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Reference Links
- https://git.proxmox.com/?p=pve-http-server.git;a=commitdiff;h=580d540ea907ba15f64379c5bb69ecf1a49a875f
- https://git.proxmox.com/?p=pve-http-server.git;a=commitdiff;h=c2bd69c7b5e9c775f96021cf8ae53da3dbd9029d
- https://git.proxmox.com/?p=pve-http-server.git;a=commitdiff;h=e9df8a6e76b2a18f89295a5d92a62177bbf0f762
- https://starlabs.sg/blog/2022/12-multiple-vulnerabilites-in-proxmox-ve--proxmox-mail-gateway/
- https://git.proxmox.com/?p=pve-http-server.git%3Ba=commitdiff%3Bh=580d540ea907ba15f64379c5bb69ecf1a49a875f
- https://git.proxmox.com/?p=pve-http-server.git%3Ba=commitdiff%3Bh=e9df8a6e76b2a18f89295a5d92a62177bbf0f762
- https://git.proxmox.com/?p=pve-http-server.git%3Ba=commitdiff%3Bh=c2bd69c7b5e9c775f96021cf8ae53da3dbd9029d
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2022-35508.
What is the severity of CVE-2022-35508?
The severity of CVE-2022-35508 is critical with a severity value of 9.8.
Which software is affected by CVE-2022-35508?
Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) are affected by CVE-2022-35508.
What is the impact of CVE-2022-35508?
An attacker with an unprivileged account can craft an HTTP request to achieve SSRF and file disclosure of any files on the server.
Are there any fixes or patches available for CVE-2022-35508?
Yes, patches have been released. Please refer to the provided references for more information.
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- canonical/proxmox mail gateway
- canonical/proxmox ve