CVE-2012-4776

Description

The Web Proxy Auto-Discovery (WPAD) functionality in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not validate configuration data that is returned during acquisition of proxy settings, which allows remote attackers to execute arbitrary JavaScript code by providing crafted data during execution of (1) an XAML browser application (aka XBAP) or (2) a .NET Framework application, aka "Web Proxy Auto-Discovery Vulnerability."

Category

9.3
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 48.83% Top 5%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.us-cert.gov/cas/techalerts/TA12-318A.html third party advisory us government resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074 vendor advisory
http://www.securityfocus.com/bid/56463 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15810 vdb entry signature
http://osvdb.org/87266 vdb entry
http://secunia.com/advisories/51236 third party advisory
http://www.securitytracker.com/id?1027753 vdb entry

Frequently Asked Questions

What is the severity of CVE-2012-4776?
CVE-2012-4776 has been scored as a critical severity vulnerability.
How to fix CVE-2012-4776?
To fix CVE-2012-4776, 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-2012-4776 being actively exploited in the wild?
It is possible that CVE-2012-4776 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~49% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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