Multiple vulnerabilities in WebKitGTK and WPE WebKit
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-1788 CVE-2021-1844 CVE-2021-1871 |
| CWE-ID | CWE-416 CWE-119 CWE-840 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #3 is being exploited in the wild. |
| Vulnerable software Subscribe |
WebKitGTK+ Server applications / Frameworks for developing and running applications WPE WebKit Server applications / Frameworks for developing and running applications |
| Vendor | WebKitGTK |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU50231
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1788
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 in WebKit. 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 update from vendor's website.
WebKitGTK+: 2.0.0 - 2.31.90
WPE WebKit: 2.19.93 - 2.31.90
External linkshttp://webkitgtk.org/security/WSA-2021-0003.html
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.
2) Buffer overflow
EUVDB-ID: #VU51268
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1844
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing web content 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.
MitigationInstall update from vendor's website.
WebKitGTK+: 2.0.0 - 2.31.90
WPE WebKit: 2.19.93 - 2.31.90
External linkshttp://webkitgtk.org/security/WSA-2021-0003.html
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.
3) Business Logic Errors
EUVDB-ID: #VU50044
Risk: Critical
CVSSv3.1: 8.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2021-1871
CWE-ID:
CWE-840 - Business Logic Errors (3.0)
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to a logic issue in the WebKit component. A remote attacker can trick a victim to visit a malicious website and execute arbitrary code on the system.
Note: The vulnerability is being actively exploited in the wild.
MitigationInstall update from vendor's website.
WebKitGTK+: 2.0.0 - 2.31.90
WPE WebKit: 2.19.93 - 2.31.90
External linkshttp://webkitgtk.org/security/WSA-2021-0003.html
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.
