Remote code execution in WebKitGTK
| 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 Subscribe |
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
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWebKitGTK+: 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
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWebKitGTK+: 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?
