CVE-2019-10772 Sanitizer bypass in svg-sanitizer
Attackers can bypass sanitization via xlink:href attributes to inject malicious scripts, affecting applications using this PHP library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-10772?
CVE-2019-10772 is a medium-severity cross-site scripting vulnerability in enshrined/svg-sanitize, published on 11 Dec 2019. 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
It is possible to bypass enshrined/svg-sanitize before 0.13.1 using the "xlink:href" attribute due to mishandling of the xlink namespace by the sanitizer.
Weakness: CWE-79
Which versions are affected by CVE-2019-10772?
2 open source packages ship an affected version, including enshrined/svg-sanitize. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
enshrined/svg-sanitize Packagist | All versions | 0.13.1 |
enshrined/svg-sanitize Packagist | All versions | 0.13.1 |
Products include Svg-Sanitizer Project Svg-Sanitizer.
How do I fix CVE-2019-10772?
Upgrade enshrined/svg-sanitize to 0.13.1 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-2019-10772 being exploited?
There is no known exploitation of CVE-2019-10772 in the wild and no public exploit code.
Other vulnerabilities in enshrined/svg-sanitize
Sources
Also known as GHSA-8rc5-hx3v-2jg7, SNYK-PHP-ENSHRINEDSVGSANITIZE-536969.