Vulnerability Details : CVE-2021-37439
NCH FlexiServer v6.00 suffers from a syslog?file=/.. path traversal vulnerability.
Vulnerability category: Directory traversal
Exploit prediction scoring system (EPSS) score for CVE-2021-37439
Probability of exploitation activity in the next 30 days: 0.09%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 37 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-37439
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:N/A:N |
8.0
|
2.9
|
NIST |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-37439
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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-2021-37439
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https://github.com/0xfml/poc/blob/main/NCH/Flexiserver_6.00_LFI.md
poc/Flexiserver_6.00_LFI.md at main · 0xfml/poc · GitHubExploit;Third Party Advisory
-
https://www.nchsoftware.com/flexi/index.html
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Products affected by CVE-2021-37439
- cpe:2.3:a:nch:flexiserver:*:*:*:*:*:*:*:*