CVE-2022-30636

2024-07-0200:00:00

ubuntu.com

httptokencachekey

path.base

windows

dircache

vulnerability

AI Score

Confidence

Low

JSON

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.

Notes

Author	Note
	Priority reason: Does not affect Ubuntu, only affects Go on Windows
mdeslaur	Packages built using golang need to be rebuilt once the vulnerability has been fixed. This CVE entry does not list packages that need rebuilding outside of the main repository or the Ubuntu variants with PPA overlays. Warning: do not include nullboot in the list of no-change rebuilds after fixing an issue in golang.
alexmurray	Only affects golang on Windows so golang on Ubuntu is not affected