CVE-2020-4054

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.

CVSS v3.0 7.3 HIGH
CVSS v2.0 6.8 MEDIUM

7.3^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/rgrove/sanitize/commit/a11498de9e283cd457b35ee252983662f7452aa9	Patch Third Party Advisory
https://github.com/rgrove/sanitize/security/advisories/GHSA-p4x4-rw2p-8j8m	Third Party Advisory
https://github.com/rgrove/sanitize/releases/tag/v5.2.1	Release Notes Third Party Advisory
https://www.debian.org/security/2020/dsa-4730
https://usn.ubuntu.com/4543-1/

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Configurations

Configuration 1 (hide)

cpe:2.3:a:sanitize_project:sanitize:*:*:*:*:*:ruby:*:*

Information

Published : 2020-06-16 15:15

Updated : 2020-09-28 13:15

NVD link : CVE-2020-4054

Mitre link : CVE-2020-4054

JSON object : View

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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Products Affected

sanitize_project

sanitize

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