CVE-2022-30636 (GCVE-0-2022-30636)

Vulnerability from cvelistv5 – Published: 2024-07-02 19:51 – Updated: 2024-08-07 16:21
VLAI?
Summary
httpTokenCacheKey uses path.Base to extract the expected HTTP-01 token value to lookup in the DirCache implementation. On Windows, path.Base acts differently to filepath.Base, since Windows uses a different path separator (\ vs. /), allowing a user to provide a relative path, i.e. .well-known/acme-challenge/..\..\asd becomes ..\..\asd. The extracted path is then suffixed with +http-01, joined with the cache directory, and opened. Since the controlled path is suffixed with +http-01 before opening, the impact of this is significantly limited, since it only allows reading arbitrary files on the system if and only if they have this suffix.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE 22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
Go
References
Impacted products
Vendor Product Version
golang.org/x/crypto golang.org/x/crypto/acme/autocert Affected: 0 , < 0.0.0-20220525230936-793ad666bf5e (semver)
Create a notification for this product.
Credits
Juho Nurminen of Mattermost
Show details on NVD website
To clipboard 

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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