CVE-2022-23516
This may lead to a denial of service through CPU resource consumption.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.09% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- loofah project/loofah
- Source
- security-advisories@github.com
References
- https://github.com/flavorjones/loofah/security/advisories/GHSA-3x8r-x6xp-q4vmThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html
- https://github.com/flavorjones/loofah/security/advisories/GHSA-3x8r-x6xp-q4vmThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html
- https://lists.debian.org/debian-lts-announce/2024/09/msg00044.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.