Multiple vulnerabilities in WebKitGTK

Published: 2021-05-03 | Updated: 2021-06-03

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-30665 CVE-2021-30663
CWE-ID	CWE-119 CWE-190
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software	WebKitGTK+ Server applications / Frameworks for developing and running applications
Vendor	WebKitGTK

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 03.06.2021

Changed bulletin status to patched.

1) Buffer overflow

EUVDB-ID: #VU52815

Risk: Critical

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-30665

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in WebKit. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

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

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.30.0 - 2.32.0

CPE2.3

External links

http://support.apple.com/en-us/HT212335

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?

Yes. This vulnerability is being exploited in the wild.

2) Integer overflow

EUVDB-ID: #VU52814