Remote code execution in WebKitGTK



Published: 2021-06-03
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-21806
CVE-2021-21775
CWE-ID CWE-416
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #2 is available.
Vulnerable software
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WebKitGTK+
Server applications / Frameworks for developing and running applications

WPE WebKit
Server applications / Frameworks for developing and running applications

Vendor WebKitGTK
WPE WebKit

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU53781

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-21806

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.0.0 - 2.30.1

WPE WebKit: 2.19.93 - 2.31.91


CPE2.3 External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1214

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Use-after-free

EUVDB-ID: #VU53782

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-21775

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WebKitGTK+: 2.0.0 - 2.30.4

WPE WebKit: 2.19.93 - 2.30.4


CPE2.3 External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1229

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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