Remote code execution in Mozilla Firefox

1) Heap-based buffer overflow

EUVDB-ID: #VU81244

Risk: Critical

CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2023-44488,CVE-2023-5217

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in vp8 encoding in libvpx. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Firefox Focus for Android: 108.2.0 - 119.0b2

Firefox ESR: 10.0 - 115.3.0

Mozilla Firefox: 100.0 - 118.0

Firefox for Android: 66.0.4 - 118.0

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2023-44/

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 perform certain actions on the device.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.