High severity · published Sep 27, 2023
CVE-2023-43320
An issue in Proxmox Server Solutions GmbH Proxmox VE v.5.4 thru v.8.0, Proxmox Backup Server v.1.1 thru v.3.0, and Proxmox Mail Gateway v.7.1 thru v.8.0 allows a remote…
8.8
CVSS
1.4%
EPSS
No
On KEV
Description
An issue in Proxmox Server Solutions GmbH Proxmox VE v.5.4 thru v.8.0, Proxmox Backup Server v.1.1 thru v.3.0, and Proxmox Mail Gateway v.7.1 thru v.8.0 allows a remote authenticated attacker to escalate privileges via bypassing the two-factor authentication component.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BS
Backup Server · Proxmox
1.1 through 3.0 · source: NVD
PM
Proxmox Mail Gateway · Proxmox
7.1 through 8.0 · source: NVD
VE
Virtual Environment · Proxmox
5.4 through 8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-43320
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-43320
packetstormsecurity.com
http://packetstormsecurity.com/files/176967/Proxmox-VE-7.4-1-TOTP-Brute-Force.html
Issue Tracking
https://bugzilla.proxmox.com/show_bug.cgi?id=4579
Issue Tracking
https://bugzilla.proxmox.com/show_bug.cgi?id=4584
Patch
https://github.com/proxmox/proxmox-rs/commit/50b793db8d3421bbfe2bce060a486263f18a90cb