CVE-2021-1825 Cross-site scripting in Safari
Attackers can execute arbitrary scripts in the victim's browser context by tricking them into visiting a malicious website using Safari or WebKit-based apps.
- 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-2021-1825?
CVE-2021-1825 is a medium-severity cross-site scripting vulnerability in Apple Icloud, published on 8 Sep 2021. 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
An input validation issue was addressed with improved input validation. This issue is fixed in iTunes 12.11.3 for Windows, iCloud for Windows 12.3, macOS Big Sur 11.3, Safari 14.1, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may lead to a cross site scripting attack.
Weakness: CWE-79
Which versions are affected by CVE-2021-1825?
It affects 8 products.
Products include Apple Icloud, Apple Ipados, Apple Iphone Os, Apple Itunes, Apple Macos, Apple Safari and 2 more.
How do I fix CVE-2021-1825?
Apply the vendor's patch.
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-2021-1825 being exploited?
There is no known exploitation of CVE-2021-1825 in the wild and no public exploit code.
Other vulnerabilities in Apple Icloud
Sources
Also known as DEBIAN-CVE-2021-1825, GHSA-7gx9-m7c6-98gf, UBUNTU-CVE-2021-1825.