CVE-2022-30636
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/acme/autocert | 0 < 0.0.0-20220525230936-793ad666bf5e | affected |
Weaknesses
- CWE 22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
ADP Enrichment
CVE Program Container
Additional References
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
References
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