CVE-2023-32562
Published: 10 August 2023
Summary
CVE-2023-32562 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Ivanti Avalanche. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 2.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
An unrestricted upload of file with dangerous type vulnerability, tracked as CVE-2023-32562 and assigned CWE-434, affects Ivanti Avalanche versions 6.3.x and below. The flaw carries a CVSS 3.1 score of 9.8 and permits an unauthenticated network attacker to upload files of arbitrary dangerous types, leading to remote code execution on the server.
An attacker with no credentials or user interaction can send a crafted upload request over the network to achieve full compromise of confidentiality, integrity, and availability on the affected Avalanche instance. The published EPSS score stands at 0.5316 with no material rise from a lower baseline.
The vendor advisory states that the issue is resolved in Avalanche 6.4.1; administrators are directed to apply the update referenced in the Ivanti support article for mitigation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-36806
Vulnerability details
An unrestricted upload of file with dangerous type vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to achieve a remove code execution. Fixed in version 6.4.1.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.