CVE-2022-21221

Public Exploit
Directory Traversal

Description

The package github.com/valyala/fasthttp before 1.34.0 are vulnerable to Directory Traversal via the ServeFile function, due to improper sanitization. It is possible to be exploited by using a backslash %5c character in the path. **Note:** This security issue impacts Windows users only.

Category

5.9
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory snyk.io
Affected: n/a github.com/valyala/fasthttp
Published at:
Updated at:

References

Link Tags
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMVALYALAFASTHTTP-2407866 patch third party advisory exploit
https://github.com/valyala/fasthttp/issues/1226 patch exploit third party advisory issue tracking
https://github.com/valyala/fasthttp/commit/6b5bc7bb304975147b4af68df54ac214ed2554c1 third party advisory patch
https://github.com/valyala/fasthttp/commit/15262ecf3c602364639d465daba1e7f3604d00e8 third party advisory patch
https://github.com/valyala/fasthttp/releases/tag/v1.34.0 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2022-21221?
CVE-2022-21221 has been scored as a medium severity vulnerability.
How to fix CVE-2022-21221?
To fix CVE-2022-21221, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-21221 being actively exploited in the wild?
It is possible that CVE-2022-21221 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-21221?
CVE-2022-21221 affects n/a github.com/valyala/fasthttp.
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