#VU29461 Integer overflow in Mozilla Firefox - CVE-2020-12422
Published: July 2, 2020 / Updated: July 31, 2020
Vulnerability identifier: #VU29461
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-12422
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Firefox
Mozilla Firefox
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the nsJPEGEncoder::emptyOutputBuffer function when processing JPEG images. A remote attacker can create a specially crafted JPEG image, trick the victim into visiting a web page with such an image, trigger integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.