GHSA-8v9w-p43c-r885

Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/06/GHSA-8v9w-p43c-r885/GHSA-8v9w-p43c-r885.json
Aliases
  • CVE-2022-31100
Published
2022-06-21T20:12:15Z
Modified
2022-06-22T14:43:45Z
Details

Impact

When parsing untrusted rulex expressions, rulex may crash, possibly enabling a Denial of Service attack. This happens when the expression contains a multi-byte UTF-8 code point in a string literal or after a backslash, because rulex tries to slice into the code point and panics as a result.

This is a security concern for you, if - your service parses untrusted rulex expressions (expressions provided by an untrusted user), and - your service becomes unavailable when the thread running rulex panics.

Patches

The crashes are fixed in version 0.4.3. Affected users are advised to update to this version.

Workarounds

You can use catch_unwind to recover from panics.

For more information

If you have any questions or comments about this advisory: * Open an issue in rulex * Email me at ludwig.stecher@gmx.de

Credits

Credit for finding these bugs goes to

References

Affected packages

crates.io / rulex

rulex

Affected ranges

Type
SEMVER
Events
Introduced
0
Fixed
0.4.3

Affected versions