CVE-2023-30612

MEDIUM EPSS 27.9%
Published Apr 19, 20233y ago · Modified Jun 17, 20262w ago
4.9 CVSS 3.1
Medium
Find Similar
Published Apr 19, 2023 3y ago
Last Modified Jun 17, 2026 2w ago

Description

Cloud hypervisor is a Virtual Machine Monitor for Cloud workloads. This vulnerability allows users to close arbitrary open file descriptors in the Cloud Hypervisor process via sending malicious HTTP request through the HTTP API socket. As a result, the Cloud Hypervisor process can be easily crashed, causing Deny-of-Service (DoS). This can also be a potential Use-After-Free (UAF) vulnerability. Users require to have the write access to the API socket file to trigger this vulnerability. Impacted versions of Cloud Hypervisor include upstream main branch, v31.0, and v30.0. The vulnerability was initially detected by our `http_api_fuzzer` via oss-fuzz. This issue has been addressed in versions 30.1 and 31.1. Users unable to upgrade may mitigate this issue by ensuring the write access to the API socket file is granted to trusted users only.

CVSS Details

Base Score
4.9
Exploitability
1.2
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
27.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-306 Missing Authentication for Critical Function Authentication
CWE-416 Use After Free Memory Safety

Affected Products 2

VendorProductVersionRange
cloudhypervisorcloud_hypervisor30.0any
cloudhypervisorcloud_hypervisor31.1any

References 5

  • github.com https://github.com/cloud-hypervisor/cloud-hypervisor/pull/5350
    Patch
  • github.com https://github.com/cloud-hypervisor/cloud-hypervisor/pull/5373
    Patch
  • github.com https://github.com/cloud-hypervisor/cloud-hypervisor/security/advisories/GHSA-g6mw-f26h-4jgp
    PatchVendor Advisory
  • oss-fuzz.com https://oss-fuzz.com/testcase-detail/5260873569796096
    Permissions Required
  • oss-fuzz.com https://oss-fuzz.com/testcase-detail/5426283514560512
    Permissions Required

Remediation

  • github.com https://github.com/cloud-hypervisor/cloud-hypervisor/pull/5350
    Patch
  • github.com https://github.com/cloud-hypervisor/cloud-hypervisor/pull/5373
    Patch
  • github.com https://github.com/cloud-hypervisor/cloud-hypervisor/security/advisories/GHSA-g6mw-f26h-4jgp
    PatchVendor Advisory