CVE-2016-10257 Cross-site scripting in ASG

Medium 6.1 Published Updated

Remote attackers can inject arbitrary JavaScript into the management console via crafted URLs, potentially leading to session hijacking or malicious actions.

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-2016-10257?

CVE-2016-10257 is a medium-severity cross-site scripting vulnerability in Symantec Corporation ASG, published on 10 Jan 2018. 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

The Symantec Advanced Secure Gateway (ASG) 6.6, ASG 6.7 (prior to 6.7.2.1), ProxySG 6.5 (prior to 6.5.10.6), ProxySG 6.6, and ProxySG 6.7 (prior to 6.7.2.1) management console is susceptible to a reflected XSS vulnerability. A remote attacker can use a crafted management console URL in a phishing attack to inject arbitrary JavaScript code into the management console web client application. This is a separate vulnerability from CVE-2016-10256.

Weakness: CWE-79

Which versions are affected by CVE-2016-10257?

It affects 2 products.

Products include Broadcom Advanced Secure Gateway, Broadcom Symantec Proxysg.

How do I fix CVE-2016-10257?

No fix has been published for CVE-2016-10257 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-2016-10257 being exploited?

There is no known exploitation of CVE-2016-10257 in the wild and no public exploit code.

Sources

Also known as GHSA-vfc6-mrqm-f3vr.

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