PT-2023-28777 · Proxmox · Proxmox Mail Gateway+2

Cory Cline · Published 2023-09-27 · Updated 2024-10-29 · CVE-2023-43320

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Proxmox VE versions 5.4 through 8.0 Proxmox Backup Server versions 1.1 through 3.0 Proxmox Mail Gateway versions 7.1 through 8.0

Description An issue in Proxmox products allows a remote authenticated attacker to escalate privileges via bypassing the two-factor authentication component.

Recommendations For Proxmox VE versions 5.4 through 8.0, update to a version that includes a fix for this issue. For Proxmox Backup Server versions 1.1 through 3.0, update to a version that includes a fix for this issue. For Proxmox Mail Gateway versions 7.1 through 8.0, update to a version that includes a fix for this issue. As a temporary workaround, consider disabling the two-factor authentication bypass component until a patch is available.

Fix

Related Identifiers

CVE-2023-43320

Affected Products

Proxmox Backup Server

Proxmox Mail Gateway

Proxmox Ve

References · 9

• https://github.com/proxmox/proxmox-rs/commit/50b793db8d3421bbfe2bce060a486263f18a90cb · Patch
• https://bugzilla.proxmox.com/show_bug.cgi?id=4584 · Vendor Advisory
• https://bugzilla.proxmox.com/show_bug.cgi?id=4579 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-43320 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-43320 · Security Note
• https://twitter.com/CVEnew/status/1707160592652669103 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1707195056313000109 · Twitter Post
• https://t.me/cvenotify/59039 · Telegram Post
• http://packetstormsecurity.com/files/176967/Proxmox-VE-7.4-1-TOTP-Brute-Force.html · Note