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

Vulnerability from cvelistv5 – Published: 2024-07-02 19:51 – Updated: 2024-08-07 16:21
VLAI
Title
Limited directory traversal vulnerability on Windows in golang.org/x/crypto
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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