CVE-2023-43320

HIGH EPSS 58.1%
Published Sep 27, 20232y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Sep 27, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
58.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 3

VendorProductVersionRange
proxmoxbackup_server*≥1.1  –  ≤3.0
proxmoxproxmox_mail_gateway*≥7.1  –  ≤8.0
proxmoxvirtual_environment*≥5.4  –  ≤8.0

References 4

  • packetstormsecurity.com http://packetstormsecurity.com/files/176967/Proxmox-VE-7.4-1-TOTP-Brute-Force.html
  • bugzilla.proxmox.com https://bugzilla.proxmox.com/show_bug.cgi?id=4579
    Issue TrackingVendor Advisory
  • bugzilla.proxmox.com https://bugzilla.proxmox.com/show_bug.cgi?id=4584
    Issue TrackingVendor Advisory
  • github.com https://github.com/proxmox/proxmox-rs/commit/50b793db8d3421bbfe2bce060a486263f18a90cb
    Patch

Remediation

  • github.com https://github.com/proxmox/proxmox-rs/commit/50b793db8d3421bbfe2bce060a486263f18a90cb
    Patch