CVE-2020-4054

Description

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 Sanitizes 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 Sanitizes 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.

Risk Information

Base Score

7.3

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS Score

Exploitation Probability

0.484

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2020-4054 are fixed in Ruby-sanitize 5.2.1	Windows
ruby-sanitize security update(DSA-4730-1) ruby-sanitize_4.6.6-2.1~deb10u1_all.deb	Linux
allowlist-based HTML and CSS sanitizer (USN-4543-1) ruby-sanitize_4.6.6-2.1~0.20.04.1_all.deb	Linux
Vulnerabilities CVE-2020-4054 are fixed in Ruby-sanitize for Linux 5.2.1	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234