H3C CVM /cas/fileUpload/upload token path traversal

Summaryinfo

A vulnerability categorized as very critical has been discovered in H3C CVM. Affected by this vulnerability is an unknown functionality of the file /cas/fileUpload/upload. Such manipulation of the argument token leads to path traversal. This vulnerability is traded as CVE-2023-54405. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in H3C CVM (affected version unknown) and classified as very critical. Affected by this issue is an unknown functionality of the file /cas/fileUpload/upload. The manipulation of the argument token with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

H3C CVM, the Cloud Virtualization Management component of the H3C CAS cloud platform, contains an unauthenticated arbitrary file upload vulnerability in the /cas/fileUpload/upload endpoint that allows remote attackers to write arbitrary files by manipulating the caller-supplied token parameter without restricting path traversal or file type. Attackers can exploit the path traversal in the token parameter to upload a malicious JSP file into a web-accessible directory and then request it to achieve remote code execution as the web-server user. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-54405 since 10/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/02/2026). The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• H3C

Name

• CVM

License

• commercial

CPE 2.3info

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CPE 2.2info

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