Uncontrolled Recursion in Loofah
CVE-2022-23516

7.5HIGH

Key Information:

Vendor

Flavorjones

Status
Loofah
Vendor
CVE Published:
14 December 2022

What is CVE-2022-23516?

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.

Affected Version(s)

loofah >= 2.2.0, < 2.19.1

References

https://github.com/flavorjones/loofah/security/advisories...
x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2023/09/msg0...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.