Vulnerability identifier: #VU1018

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-1954

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers
Firefox ESR
Client/Desktop applications / Web browsers
Mozilla Thunderbird
Client/Desktop applications / Messaging software
Oracle Solaris
Operating systems & Components / Operating system
Oracle Linux
Operating systems & Components / Operating system

Vendor: Mozilla
Oracle

Description
The vulnerability allows a remote unauthenticated user to cause DoS conditions on the target system.
The weakness is due to improper input validation. By convincing a victim to visit a malicious website, attackers can overwrite an add-on resource that may lead to denial of service or privilege escalation.
Successful exploitation of the vulnerability will result in denial of service on the vulnerable system.

Mitigation
Update Firefox to version 45.
Update Firefox ESR to version 38.7.
Update Thunderbird to version 38.7 or 45.

Vulnerable software versions

Mozilla Firefox: 40.0 - 44.0

Firefox ESR: 38.0 - 38.6.0

Mozilla Thunderbird: 38.0 - 38.6, 37.0, 36.0, 35.0, 34.0

Oracle Solaris: 11.3

Oracle Linux: 5 - 7

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External links
http://tools.cisco.com/security/center/viewAlert.x?alertId=43941
http://www.mozilla.org/en-US/security/advisories/mfsa2016-17/
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

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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.