#VU15500 Improper input validation in Mozilla Firefox - CVE-2018-12401

Vulnerability identifier: #VU15500

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12401

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 an error when using special resource URIs. A remote attacker can trick the victim into visiting a specially crafted website and cause a non-exploitable crash if loaded with optional parameters following a '?' in the parsed string.

Mitigation
Update to version 63.0.

Vulnerable software versions

Mozilla Firefox: 62.0 - 62.0.3

---

External links
https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/

---

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.