Zero-day Vulnerability Database

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Zero-day vulnerabilities discovered: 1

Security bypass in Mozilla Firefox
CVE-2015-4495

Security bypass

The vulnerabiity allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to improper input validation. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, bypass same-origin policy and inject arbitrary JavaScript into the built-in PDF Viewer to gain access to arbitrary files on the system.

Successful exploitation of this vulnerability may result in access to local files and privilege escalation, leading to system compromise.

Note: the vulnerability was being actively exploited.
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In August 2016 Mozilla bug-tracking service was hacked. Hackers were able to steal information about not yet patched vulnerabilities in Mozilla Firefox and use one of them in a targeted attack against users of Russian news website.

The malicious exfiltration server, hosted in Ukraine, has been online since July 27, 2015.

The vulnerability was reported by researcher Cody Crews.

Software: Mozilla Firefox

Known/fameous malware:

JS/Exploit.CVE-2015-4495 (ESET).

In August 2016 Mozilla bug-tracking service was hacked. Hackers were able to steal information about not yet patched vulnerabilities in Mozilla Firefox and use one of them in a targeted attack against users of Russian news website.

The malicious exfiltration server, hosted in Ukraine, has been online since July 27, 2015.

The vulnerability was reported by researcher Cody Crews.

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