#VU10971 Integer overflow in Firefox ESR - CVE-2018-5144

Vulnerability identifier: #VU10971

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5144

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Firefox ESR
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 integer overflow during conversion of text to some Unicode character sets. A remote attacker can supply unchecked length parameter, trigger overflow and cause the service to crash.

Mitigation
Update to version ESR 52.7.

Vulnerable software versions

Firefox ESR: 52.6.0

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2018-07/

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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.