CVE-2022-23514 — Regex Denial of Service in Loofah

CWE-1333 — Regex Denial of Service6 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.3%
top 51.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Flavorjones LoofahLoofah Project LoofahDebian Ruby-loofah
Timeline
PublishedDec 14

Description

Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri. 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. This issue is patched in version 2.19.1.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶CVEListV5flavorjones/loofah< 2.19.1
▶debiandebian/ruby-loofah< ruby-loofah 2.19.1-1 (bookworm)
▶NVDloofah_project/loofah< 2.19.1
▶RubyGemsloofah_project/loofah< 2.19.1

🔴Vulnerability Details

3
OSV
CVE-2022-23514: Loofah is a general library for manipulating and transforming HTML/XML documents and fragments, built on top of Nokogiri↗2022-12-14
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GHSA
Inefficient Regular Expression Complexity in Loofah↗2022-12-13
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OSV
Inefficient Regular Expression Complexity in Loofah↗2022-12-13
▶

📋Vendor Advisories

2
Red Hat
rubygem-loofah: inefficient regular expression leading to denial of service↗2022-12-13
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Debian
CVE-2022-23514: ruby-loofah - Loofah is a general library for manipulating and transforming HTML/XML documents...↗2022
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