CVE-2017-16821

Public Exploit

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.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.19%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/b3log/symphony/issues/503 issue tracking exploit third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-16821?
CVE-2017-16821 has been scored as a medium severity vulnerability.
How to fix CVE-2017-16821?
To fix CVE-2017-16821, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-16821 being actively exploited in the wild?
It is possible that CVE-2017-16821 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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