Remote code execution in Mozilla Firefox

1) Heap-based buffer overflow

EUVDB-ID: #VU13074

Risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6126

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The weakness exists due to heap-based buffer overflow in Skia when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update to versions 60.0.2, ESR 52.8.1, ESR 60.0.2.

Vulnerable software versions

Firefox ESR: 52.8 - 60.0

Mozilla Firefox: 60.0

CPE2.3

• cpe:2.3:a:mozilla:firefox_esr:60.0:*:*:*:*:*:*:
• cpe:2.3:a:mozilla:firefox_esr:52.8:*:*:*:*:*:*:
• cpe:2.3:a:mozilla:mozilla_firefox:60.0:*:*:*:*:*:*:

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2018-14/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.