Vulnerability identifier: #VU8110

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to and error insufficient validation of user-supplied input. A remote attacker can trick the victim into opening a specially crafted .pdf file, cause the PDF viewer component to hang and Firefox to use a lot of CPU power.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 57.

Vulnerable software versions

Mozilla Firefox: 45.0 - 55.0

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External links
http://bugzilla.mozilla.org/show_bug.cgi?id=1393476

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.