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CVE-2024-21545

Proxmox Virtual Environment is an open-source server management platform for enterprise virtualization.

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 7.4-19, 8.2.7, 7.4-4, 8.2.5, 4.3.0, and 4 more
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

Proxmox Virtual Environment is an open-source server management platform for enterprise virtualization. Insufficient safeguards against malicious API response values allow authenticated attackers with 'Sys.Audit' or 'VM.Monitor' privileges to download arbitrary host files via the API. When handling the result from a request handler before returning it to the user, the handle_api2_request function will check for the ‘download’ or ‘data’->’download’ objects inside the request handler call response object. If present, handle_api2_request will read a local file defined by this object and return it to the user. Two endpoints were identified which can control the object returned by a request handler sufficiently that the ’download’ object is defined and user controlled. This results in arbitrary file read. The privileges of this file read can result in full compromise of the system by various impacts such as disclosing sensitive files allowing for privileged session forgery.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Proxmox pve-manager

    fixed in 7.4-19; From 8.0.0 · fixed in 8.2.7

  • Proxmox libpve-storage-perl

    fixed in 7.4-4; From 8.0.0 · fixed in 8.2.5

  • Proxmox libpve-http-server-perl

    From 3.2-1 · fixed in 4.3.0; From 5.0.0 · fixed in 5.1.1

  • Proxmox pmg-api

    fixed in 7.3-12; From 8.0.0 · fixed in 8.1.4

  • Proxmox libpve-common-perl (Promox VE 8)

    fixed in 8.2.3

  • Proxmox libpve-common-perl (Promox Mail Gateway 8)

    fixed in 8.2.5

References 3

git.proxmox.com

forum.proxmox.com

GitHub · SpiralBL0CK/CVE-2024-21545-PoC