QID 983069

QID 983069: Nodejs (npm) Security Update for dompurify (GHSA-chqj-j4fh-rw7m)

Versions of `dompurify` prior to 2.0.3 are vulnerable to Cross-Site Scripting (XSS). The package has an XSS filter bypass due to Mutation XSS in both Chrome and Safari through a combination of `<svg>`/`<math>` elements and `</p>`/`</br>`. An example payload is: `<svg></p><style><a id="</style><img src=1 onerror=alert(1)>">`. This allows attackers to bypass the XSS protection and execute arbitrary JavaScript in a victim's browser.

## Recommendation

Upgrade to version 2.0.3 or later. You may also disallow `<svg>` and `<math>` through `dompurify` configurations:
```DOMPurify.sanitize(input, {
FORBID_TAGS: ['svg', 'math']
});```

Successful exploitation of this vulnerability may affect the confidentiality, integrity, and availability of the targeted user.

CVSS V3 rated as High - 6.1 severity.

CVSS V2 rated as Medium - 4.3 severity.

Solution

Customers are advised to refer to GHSA-chqj-j4fh-rw7m for updates pertaining to this vulnerability.

Vendor References

GHSA-chqj-j4fh-rw7m - github.com/advisories/GHSA-chqj-j4fh-rw7m

CVEs related to QID 983069

CVE-2019-16728 |

Software Advisories

Advisory ID	Software	Component	Link
GHSA-chqj-j4fh-rw7m	dompurify		github.com/advisories/GHSA-chqj-j4fh-rw7m

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