GHSA-486f-hjj9-9vhh
Inefficient Regular Expression Complexity in Loofah
Quick fix
GHSA-486f-hjj9-9vhh — loofah: upgrade to the fixed version with the command below.
bundle update loofahDetails
## Summary
Loofah `< 2.19.1` contains an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption.
## Mitigation
Upgrade to Loofah `>= 2.19.1`.
## Severity
The Loofah maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
## References
- [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html) - https://hackerone.com/reports/1684163
## Credit
This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2022-23514[ADVISORY]
- https://github.com/flavorjones/loofah/commit/a6e0a1ab90675a17b1b2be189129d94139e4b143[WEB]
- https://hackerone.com/reports/1684163[WEB]
- https://github.com/flavorjones/loofah[PACKAGE]
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2022-23514.yml[WEB]
- https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html[WEB]
- https://lists.debian.org/debian-lts-announce/2024/09/msg00044.html[WEB]