CVE-2017-7783

Public Exploit

Description

If a long user name is used in a username/password combination in a site URL (such as " http://UserName:Password@example.com"), the resulting modal prompt will hang in a non-responsive state or crash, causing a denial of service. This vulnerability affects Firefox < 55.

References

Link	Tags
http://www.securityfocus.com/bid/100401	vdb entry third party advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1360842	issue tracking exploit patch
https://www.mozilla.org/security/advisories/mfsa2017-18/	vendor advisory
https://www.exploit-db.com/exploits/43020/	exploit vdb entry third party advisory
http://www.securitytracker.com/id/1039124	vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-7783?: CVE-2017-7783 has been scored as a high severity vulnerability.
How to fix CVE-2017-7783?: To fix CVE-2017-7783, 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-2017-7783 being actively exploited in the wild?: It is possible that CVE-2017-7783 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~17% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7783?: CVE-2017-7783 affects Mozilla Firefox.

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Description

Category

CWE-20 – Improper Input Validation

References

Frequently Asked Questions