GitHub Advisoryadvisory · RubyGems
GHSA-7f42-p84j-f58p Sanitize vulnerable to Improper Input Validation and Cross-site Scripting
HIGH
Official page ↗
- Aliases
- CVE-2018-3740
- Ecosystem
- RubyGems
- Packages
- sanitize
- Severity
- High
- CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-20, CWE-79
- Reviewed
- 2020-06-16
Affected packages
• RubyGems sanitize: >= 3.0.0, < 4.6.3 → fixed in 4.6.3
Description
When Sanitize = 2.9.2, a specially crafted HTML fragment can cause libxml2 to generate improperly escaped output, allowing non-whitelisted attributes to be used on whitelisted elements.
This can allow HTML and JavaScript injection, which could result in XSS if Sanitize's output is served to browsers.
Related
Alias · CVE (1)
- CVE-2018-3740 A specially crafted HTML fragment can cause Sanitize gem for Ruby to allow non-whitelisted attributes to be used on a whitelisted HTML… vulnerability
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-3740 advisory
- https://github.com/rgrove/sanitize/issues/176 web
- https://github.com/rgrove/sanitize/commit/01629a162e448a83d901456d0ba8b65f3b03d46e web
- https://github.com/rgrove/sanitize/commit/93feeb38e21864146bb29191792b971dbe1ec62e web
- https://about.gitlab.com/2018/06/25/security-release-gitlab-11-dot-0-dot-1-released web
- https://github.com/rgrove/sanitize package
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sanitize/CVE-2018-3740.yml web
- https://www.debian.org/security/2018/dsa-4358 web