Source: ruby-sanitize Version: 4.6.6-2 Severity: grave Tags: security upstream Justification: user security hole
Hi, The following vulnerability was published for ruby-sanitize. CVE-2020-4054[0]: | In Sanitize (RubyGem sanitize) greater than or equal to 3.0.0 and less | than 5.2.1, there is a cross-site scripting vulnerability. When HTML | is sanitized using Sanitize's "relaxed" config, or a custom config | that allows certain elements, some content in a math or svg element | may not be sanitized correctly even if math and svg are not in the | allowlist. You are likely to be vulnerable to this issue if you use | Sanitize's relaxed config or a custom config that allows one or more | of the following HTML elements: iframe, math, noembed, noframes, | noscript, plaintext, script, style, svg, xmp. Using carefully crafted | input, an attacker may be able to sneak arbitrary HTML through | Sanitize, potentially resulting in XSS (cross-site scripting) or other | undesired behavior when that HTML is rendered in a browser. This has | been fixed in 5.2.1. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2020-4054 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4054 [1] https://github.com/rgrove/sanitize/security/advisories/GHSA-p4x4-rw2p-8j8m [2] https://github.com/rgrove/sanitize/commit/a11498de9e283cd457b35ee252983662f7452aa9 Regards, Salvatore
