CVE-2021-35208 Cross-site scripting in n/a
Attackers can inject arbitrary JavaScript into Zimbra Calendar Invite views via unescaped HTML in element attributes, potentially leading to session hijacking or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-35208?
CVE-2021-35208 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Jul 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An issue was discovered in ZmMailMsgView.js in the Calendar Invite component in Zimbra Collaboration Suite 8.8.x before 8.8.15 Patch 23. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.
Weakness: CWE-79
Which versions are affected by CVE-2021-35208?
It affects 1 product.
Products include Zimbra Collaboration.
How do I fix CVE-2021-35208?
No fix has been published for CVE-2021-35208 yet. Limit exposure of the affected software until one is available.
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-2021-35208 being exploited?
There is no known exploitation of CVE-2021-35208 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-ccqw-9m3x-3gq7.