Vulnerability Details : CVE-2021-3152
Home Assistant before 2021.1.3 does not have a protection layer that can help to prevent directory-traversal attacks against custom integrations. NOTE: the vendor's perspective is that the vulnerability itself is in custom integrations written by third parties, not in Home Assistant; however, Home Assistant does have a security update that is worthwhile in addressing this situation
Vulnerability category: Directory traversal
Products affected by CVE-2021-3152
- cpe:2.3:a:home-assistant:home-assistant:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3152
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3152
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2021-3152
-
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.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-3152
-
https://www.home-assistant.io/blog/2021/01/22/security-disclosure/
Disclosure: security vulnerabilities in custom integrations HACS, Dwains Dashboard, Font Awesome and others - Home AssistantVendor Advisory
-
https://www.home-assistant.io/blog/2021/01/14/security-bulletin/
Security Bulletin - Home AssistantVendor Advisory
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