CVE-2017-16821 Cross-site scripting in n/a
Cross-site scripting in Symphony admin console allows attackers to execute scripts via crafted headers, potentially compromising admin accounts.
- 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-2017-16821?
CVE-2017-16821 is a medium-severity cross-site scripting vulnerability in n/a, published on 15 Nov 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
b3log Symphony (aka Sym) 2.2.0 has XSS in processor/AdminProcessor.java in the admin console, as demonstrated by a crafted X-Forwarded-For HTTP header that is mishandled during display of a client IP address in /admin/user/userid.
Weakness: CWE-79
Which versions are affected by CVE-2017-16821?
It affects 1 product.
Products include B3log Symphony.
How do I fix CVE-2017-16821?
No fix has been published for CVE-2017-16821 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-2017-16821 being exploited?
There is no known exploitation of CVE-2017-16821 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-2jpm-mx7w-4vr7.