CVE-2022-30636 Affecting golang-go.crypto package, versions <1:0.0~git20220829.c86fa9a-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published8 Jul 2024
- disclosed2 Jul 2024
Introduced: 2 Jul 2024
CVE-2022-30636 (opens in a new tab)How to fix?
Upgrade Debian:unstable golang-go.crypto to version 1:0.0~git20220829.c86fa9a-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream golang-go.crypto package and not the golang-go.crypto package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.