path-filepath on Windows filepath.Clean path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in path-filepath on Windows. This vulnerability affects the function filepath.Clean. Such manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2022-41722. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in path-filepath on Windows (affected version not known) and classified as critical. Affected by this issue is the function filepath.Clean. The manipulation 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:

A path traversal vulnerability exists in filepath.Clean on Windows. On Windows, the filepath.Clean function could transform an invalid path such as "a/../c:/b" into the valid path "c:\b". This transformation of a relative (if invalid) path into an absolute path could enable a directory traversal attack. After fix, the filepath.Clean function transforms this path into the relative (but still invalid) path ".\c:\b".

The weakness was disclosed 02/28/2023. The advisory is shared for download at go.dev. This vulnerability is handled as CVE-2022-41722 since 09/28/2022. There are known technical details, but no exploit is available. 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.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2023-1354). Once again VulDB remains the best source for vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• Oracle Linux
• Red Hat OpenShift
• RESF Rocky Linux

Productinfo

Name

• path-filepath

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion