CVE-2017-14498 Silverstripe CMS XSS Vulnerability

What is CVE-2017-14498?

CVE-2017-14498 is a medium-severity cross-site scripting vulnerability in Silverstripe Silverstripe, published on 15 Sep 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

SilverStripe CMS before 3.6.1 has XSS via an SVG document that is mishandled by (1) the Insert Media option in the content editor or (2) an admin/assets/add pathname, as demonstrated by the admin/pages/edit/EditorToolbar/MediaForm/field/AssetUploadField/upload URI, aka issue SS-2017-017.

Weakness: CWE-79

Which versions are affected by CVE-2017-14498?

2 open source packages ship an affected version, including silverstripe/cms. It affects 1 product.

Products include Silverstripe Silverstripe.

How do I fix CVE-2017-14498?

Upgrade silverstripe/cms to 3.6.1 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2017-14498 being exploited?

There is no known exploitation of CVE-2017-14498 in the wild and no public exploit code.

Other vulnerabilities in Silverstripe Silverstripe

• CVE-2007-2321 Other in n/a Critical 10.0
• CVE-2019-12204 Missing warning can lead to unauthenticated admin access in SilverStripe Critical 9.8
• CVE-2019-5715 Silverstripe Framework SQLi Vulnerability Critical 9.8
• CVE-2019-12437 Silverstripe CSRF Protection Bypass via GraphQL High 8.8
• CVE-2020-6164 Silverstripe CMS information disclosure High 7.5

All Silverstripe Silverstripe vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-j696-6m57-mcrv.