Vulnerability identifier: #VU7851

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7790

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

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

Vendor: Mozilla

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

The weakness exists due to improper input validation. A local attacker can copy stack memory data into the crash reporter and cause the browser to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation
Update to version 55.0.

Vulnerable software versions

Mozilla Firefox: 45.0 - 54.0

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External links
http://www.mozilla.org/en-US/security/advisories/mfsa2017-18/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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