CVE-2022-23518: Improper neutralization of data URIs allows XSS in rails-html-sanitizer
First published: Tue Dec 13 2022(Updated: )
## Summary rails-html-sanitizer `>= 1.0.3, < 1.4.4` is vulnerable to cross-site scripting via data URIs when used in combination with Loofah `>= 2.1.0`. ## Mitigation Upgrade to rails-html-sanitizer `>= 1.4.4`. ## Severity The maintainers have evaluated this as [Medium Severity 6.1](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N). ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - [SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg](https://github.com/w3c/svgwg/issues/266) - https://github.com/rails/rails-html-sanitizer/issues/135 - https://hackerone.com/reports/1694173 ## Credit This vulnerability was independently reported by Maciej Piechota (@haqpl) and Mrinmoy Das (@goromlagche).
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/rails-html-sanitizer | >=1.0.3<1.4.4 | 1.4.4 |
| redhat/rubygem-rails-html-sanitizer | <0:1.4.4-1.el8 | 0:1.4.4-1.el8 |
| Loofah Project Loofah | <=2.1.0 | |
| Rails Html Sanitizer Project Rails Html Sanitizer | >=1.0.3<1.4.4 | |
| redhat/rubygem-rails-html-sanitizer | <1.4.4 | 1.4.4 |
| Rubyonrails Rails Html Sanitizers | >=1.0.3<1.4.4 | |
| Debian Debian Linux | =10.0 | |
| Loofah Project Loofah | >=2.1.0<2.19.1 |
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Reference Links
- https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72m
- https://github.com/rails/rails-html-sanitizer/issues/135
- https://github.com/w3c/svgwg/issues/266
- https://hackerone.com/reports/1694173
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23518.yml
- https://nvd.nist.gov/vuln/detail/CVE-2022-23518
- https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html
- https://github.com/advisories/GHSA-mcvf-2q2m-x72m (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2153702
- https://access.redhat.com/errata/RHSA-2023:2097
- https://access.redhat.com/security/cve/cve-2022-23518
- https://bugzilla.redhat.com/show_bug.cgi?id=2153701
- https://www.cve.org/CVERecord?id=CVE-2022-23518 https://nvd.nist.gov/vuln/detail/CVE-2022-23518 https://github.com/rails/rails-html-sanitizer/issues/135 https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72m
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2022-23518.
What is the severity level of CVE-2022-23518?
The severity level of CVE-2022-23518 is Medium Severity 6.1.
Which software is affected by CVE-2022-23518?
The software affected by CVE-2022-23518 includes rails-html-sanitizer versions >= 1.0.3 and < 1.4.4, as well as Loofah >= 2.1.0.
How can I mitigate the vulnerability?
To mitigate the vulnerability, upgrade to rails-html-sanitizer version >= 1.4.4.
Where can I find more information about CVE-2022-23518?
You can find more information about CVE-2022-23518 at the following references: [CVE](https://www.cve.org/CVERecord?id=CVE-2022-23518), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2022-23518), [GitHub issue](https://github.com/rails/rails-html-sanitizer/issues/135), [GitHub advisory](https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72m), [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2153701), [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2023:2097).
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