ffcss is a CLI interface to apply and configure Firefox CSS themes. Prior to 0.2.0, the function `lookupPreprocess()` is meant to apply some transformations to a string by disabling characters in the regex `[-_ .]`. However, due to the use of late Unicode normalization of type NFKD, it is possible to bypass that validation and re-introduce all the characters in the regex `[-_ .]`. The `lookupPreprocess()` can be easily bypassed with equivalent Unicode characters like U+FE4D (﹍), which would result in the omitted U+005F (_), for instance. The `lookupPreprocess()` function is only ever used to search for themes loosely (case insensitively, while ignoring dashes, underscores and dots), so the actual security impact is classified as low. This vulnerability is fixed in 0.2.0. There are no known workarounds.
References
Link | Resource |
---|---|
https://github.com/ewen-lbh/ffcss/commit/f9c491874b858a32fcae15045f169fd7d02f90dc | Patch |
https://github.com/ewen-lbh/ffcss/security/advisories/GHSA-wpmx-564x-h2mh | Exploit Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-12-28T15:34:17.132Z
Updated: 2023-12-28T15:34:17.132Z
Reserved: 2023-12-26T17:23:22.235Z
Link: CVE-2023-52081
JSON object: View
NVD Information
Status : Modified
Published: 2023-12-28T16:16:02.090
Modified: 2024-02-29T01:42:06.407
Link: CVE-2023-52081
JSON object: View
Redhat Information
No data.