CVE-2022-23514: Inefficient Regular Expression Complexity in Loofah
First published: Tue Dec 13 2022(Updated: )
## 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).
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/loofah | <2.19.1 | 2.19.1 |
| Loofah Project Loofah | <2.19.1 | |
| redhat/rubygem-loofah | <0:2.19.1-1.el8 | 0:2.19.1-1.el8 |
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Reference Links
- https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh
- https://github.com/flavorjones/loofah/commit/a6e0a1ab90675a17b1b2be189129d94139e4b143
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2022-23514.yml
- https://nvd.nist.gov/vuln/detail/CVE-2022-23514
- https://hackerone.com/reports/1684163
- https://lists.debian.org/debian-lts-announce/2023/09/msg00011.html
- https://github.com/advisories/GHSA-486f-hjj9-9vhh (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2153235
- https://access.redhat.com/errata/RHSA-2023:2097
- https://access.redhat.com/security/cve/cve-2022-23514
- https://bugzilla.redhat.com/show_bug.cgi?id=2153234
- https://www.cve.org/CVERecord?id=CVE-2022-23514 https://nvd.nist.gov/vuln/detail/CVE-2022-23514 https://github.com/rubysec/ruby-advisory-db/tree/master/gems/loofah/CVE-2022-23514.yml
- collector/nvd-api
- collector/github-advisory-latest
- alias/GHSA-486f-hjj9-9vhh
- alias/CVE-2022-23514
- collector/github-advisory
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- collector/nvd-index
- collector/nvd-cve
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- agent/title
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- vendor/loofah project
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- package-manager/rubygems
- package-manager/redhat