CVE-2023-40930
Published: 20 September 2023
Summary
CVE-2023-40930 is a medium-severity Path Traversal (CWE-22) vulnerability in Skyworth Skyworth Os. Its CVSS base score is 6.8 (Medium).
Operationally, ranked in the top 5.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-40930 is a path traversal vulnerability (CWE-22) residing in the /system/bin/blkid component of Skyworth version 3.0. The flaw permits directory traversal when a USB storage device (Udisk) is mounted under /mnt/, allowing an attacker to access or manipulate paths outside the intended directory scope.
Exploitation requires physical access to the device and no credentials or user interaction. An attacker who connects a malicious Udisk can leverage the traversal to read, modify, or delete arbitrary files, resulting in high impact to confidentiality, integrity, and availability as reflected in the CVSS 6.8 score.
The two provided references consist of identical GitHub Gists that document the issue but contain no vendor advisory, patch details, or mitigation guidance. The associated EPSS scores have remained in a narrow band between 0.1323 and a peak of 0.1553, indicating moderate but stable exploitation interest without a pronounced post-disclosure increase.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-45469
Vulnerability details
An issue in the directory /system/bin/blkid of Skyworth v3.0 allows attackers to perform a directory traversal via mounting the Udisk to /mnt/.
- 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.
Validates pathnames and filenames to prevent traversal outside intended directories.