CVE-2021-33904 Cross-site scripting in n/a

Medium 6.1 Published Updated

Cross-site scripting vulnerability in Accela Civic Platform allows attackers to inject scripts via the servProvCode parameter, requiring specific security flag configurations.

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
None listed

What is CVE-2021-33904?

CVE-2021-33904 is a medium-severity cross-site scripting vulnerability in n/a, published on 7 Jun 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

In Accela Civic Platform through 21.1, the security/hostSignon.do parameter servProvCode is vulnerable to XSS. NOTE: The vendor states "there are configurable security flags and we are unable to reproduce them with the available information.

Weakness: CWE-79

Which versions are affected by CVE-2021-33904?

It affects 1 product.

Products include Accela Civic Platform.

How do I fix CVE-2021-33904?

No fix has been published for CVE-2021-33904 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-2021-33904 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-33904 exists.

Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.

Sources

Also known as GHSA-w8x8-8rp7-r92g.

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