Vulnerability identifier: #VU59918

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-45481

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WebKitGTK+
Server applications / Frameworks for developing and running applications
WPE WebKit
Server applications / Frameworks for developing and running applications

Vendor: WebKitGTK

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in WebCore::ImageBufferCairoImageSurfaceBackend::create. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.32.0 - 2.33.90

WPE WebKit: 2.32.0 - 2.33.90

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External links
http://github.com/ChijinZ/security_advisories/tree/master/webkitgtk-2.32.3
http://www.openwall.com/lists/oss-security/2022/01/21/2
http://webkitgtk.org/security/WSA-2022-0001.html

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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.