CVE-2023-41998
Published: 27 November 2023
Summary
CVE-2023-41998 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Arcserve Udp. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 5.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Arcserve UDP versions prior to 9.2 contain an unrestricted file upload flaw in the com.ca.arcflash.rps.webservice.RPSService4CPMImpl interface, tracked as CVE-2023-41998 and assigned CWE-434. The issue permits an unauthenticated remote attacker to supply and execute arbitrary files on the affected backup server, resulting in a CVSS 3.1 base score of 9.8.
An attacker with network access can invoke the vulnerable routine to upload a malicious payload and trigger its execution, thereby obtaining full control over the confidentiality, integrity, and availability of the system without requiring credentials or user interaction.
The associated Tenable advisory at https://www.tenable.com/security/research/tra-2023-37 provides further technical detail on the flaw. The EPSS score has remained flat at 0.1529 with no material increase observed since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-46457
Vulnerability details
Arcserve UDP prior to 9.2 contained a vulnerability in the com.ca.arcflash.rps.webservice.RPSService4CPMImpl interface. A routine exists that allows an attacker to upload and execute arbitrary files.
- 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.