#VU13558 Improper input validation in GNOME Web (Epiphany) - CVE-2018-12016

Vulnerability identifier: #VU13558

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-2018-12016

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GNOME Web (Epiphany)
Client/Desktop applications / Web browsers

Vendor: Gnome Development Team

Description

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

The vulnerability exists in libephymain.so in GNOME Web (aka Epiphany) due to insufficient validation of user-supplied input. A remote attacker can supply certain window.open and document.write calls and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

GNOME Web (Epiphany): 3.26.6 - 3.28.2.1

---

External links
https://github.com/ldpreload/Disclosure/blob/master/EpiphanyDoS.txt

---

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.