Multiple vulnerabilities in WebKitGTK and WPE WebKit



Published: 2021-12-20
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-30809
CVE-2021-30836
CWE-ID CWE-416
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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WPE WebKit
Server applications / Frameworks for developing and running applications

WebKitGTK+
Server applications / Frameworks for developing and running applications

Vendor WPE WebKit
WebKitGTK

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU58701

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-30809

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 in WebKit. A remote attacker can trick the victim to visit a specially crafted website, 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 update from vendor's website.

Vulnerable software versions

WPE WebKit: 2.32.0 - 2.32.3

WebKitGTK+: 2.32.0 - 2.32.3


CPE2.3 External links

http://webkitgtk.org/security/WSA-2021-0007.html

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Out-of-bounds read

EUVDB-ID: #VU58699

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-30836

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in WebKit. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

WPE WebKit: 2.32.0 - 2.32.3

WebKitGTK+: 2.32.0 - 2.32.3


CPE2.3 External links

http://webkitgtk.org/security/WSA-2021-0007.html

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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