CVE-2022-24725
Exposure of home directory through shescape on Unix with Bash
Impact
### Impact The issue allows for exposure of the home directory on Unix systems when using Bash with the `escape` or `escapeAll` functions from the _shescape_ API with the `interpolation` option set to `true`. Other tested shells, Dash and Zsh, are not affected. ```javascript const cp = require("child_process"); const shescape = require("shescape"); const payload = "home_directory=~"; const options = { interpolation: true }; console.log(cp.execSync(`echo ${shescape.escape(payload, options)}`)); // home_directory=/home/user ``` Depending on how the output of _shescape_ is used, directory traversal may be possible in the application using _shescape_. ### Patches The issue was patched in `v1.5.1`. ### Workarounds Manually escape all instances of the tilde character (`~`) using `arg.replace(/~/g, "\\~")`. ### References See GitHub issue https://github.com/ericcornelissen/shescape/issues/169.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | shescape | >= 1.4.0, < 1.5.1 | 1.5.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Shescape Project | Shescape | from 1.4.0 before 1.5.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/ericcornelissen/shescape/issues/169
- https://github.com/ericcornelissen/shescape/pull/170
- https://github.com/ericcornelissen/shescape/security/advisories/GHSA-446w-rrm4-r47f
- https://github.com/advisories/GHSA-446w-rrm4-r47f
- https://nvd.nist.gov/vuln/detail/CVE-2022-24725