OpenSUSE Linux update for Mozilla Firefox

Published: 2018-10-05

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-12386 CVE-2018-12387
CWE-ID	CWE-843 CWE-193
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Opensuse Operating systems & Components / Operating system
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Type Confusion

EUVDB-ID: #VU15149

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-12386

CWE-ID: CWE-843 - Type confusion

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error in register allocation within the JavaScript engine. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a type confusion error that will allow arbitrary read and write operations within the sandboxed content process.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.0 - 42.3

External links

http://lists.opensuse.org/opensuse-security-announce/2018-10/msg00002.html

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. However, proof of concept for this vulnerability is available.

2) Off-by-one

EUVDB-ID: #VU15150