# CVE-2022-23516: ruby-loofah: Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri

CVE-2022-23516 is fixed in ruby-loofah on 1 platform, first by DEBIAN-CVE-2022-23516, released December 14, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-23516
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0117
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 14, 2022

## Description

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. Loofah >= 2.2.0, < 2.19.1 uses recursion for sanitizing CDATA sections, making it susceptible to stack exhaustion and raising a SystemStackError exception.  This may lead to a denial of service through CPU resource consumption. This issue is patched in version 2.19.1. Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ruby-loofah Debian 12.15 (bookworm) | 2.19.1-1 | [DEBIAN-CVE-2022-23516](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23516.md) | Dec 14, 2022 |
| Linux | ruby-loofah Debian 13.5 (trixie) | 2.19.1-1 | [DEBIAN-CVE-2022-23516](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23516.md) | Dec 14, 2022 |
| Linux | ruby-loofah Debian 14 | 2.19.1-1 | [DEBIAN-CVE-2022-23516](https://patchblox.com/security/data/fix/linux/debian-cve-2022-23516.md) | Dec 14, 2022 |

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