Multiple vulnerabilities in WebKitGTK and WPE WebKit
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 6 |
| CVE-ID | CVE-2020-9948 CVE-2020-9951 CVE-2020-9952 CVE-2020-9983 CVE-2020-13584 CVE-2020-13543 |
| CWE-ID | CWE-843 CWE-416 CWE-79 CWE-787 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
WPE WebKit Server applications / Frameworks for developing and running applications WebKitGTK+ Server applications / Frameworks for developing and running applications |
| Vendor | WebKitGTK |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
Updated: 01.12.2020
Added vulnerability #6.
1) Type Confusion
EUVDB-ID: #VU46801
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-2020-9948
CWE-ID:
CWE-843 - Type confusion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error in WebKit component in Apple Safari. A remote attacker can trick the victim to visit a specially crafted web page, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWPE WebKit: 2.19.93 - 2.30.2
WebKitGTK+: 2.0.0 - 2.30.2
External linkshttp://support.apple.com/en-us/HT211845
http://webkitgtk.org/security/WSA-2020-0008.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) Use-after-free
EUVDB-ID: #VU46802
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-2020-9951
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 within the aboutBlankURL() function in WebKit component in Apple Safari. A remote attacker can create a specially crafted web page, trick the victim into visiting 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 versionsWPE WebKit: 2.19.93 - 2.30.2
WebKitGTK+: 2.0.0 - 2.30.2
External linkshttp://support.apple.com/en-us/HT211845
http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1124
http://webkitgtk.org/security/WSA-2020-0008.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) Cross-site scripting
EUVDB-ID: #VU46803
Risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-9952
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in WebKit component in Apple Safari. A remote attacker can trick the victim to open a specially crafted link and execute arbitrary HTML and script code in user's browser in context of a website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWPE WebKit: 2.19.93 - 2.28.2
WebKitGTK+: 2.0.0 - 2.29.3
External linkshttp://support.apple.com/en-us/HT211845
http://webkitgtk.org/security/WSA-2020-0008.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.
4) Out-of-bounds write
EUVDB-ID: #VU46804
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-2020-9983
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in WebKit component in Apple Safari. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWPE WebKit: 2.19.93 - 2.30.2
WebKitGTK+: 2.0.0 - 2.30.2
External linkshttp://support.apple.com/en-us/HT211845
http://webkitgtk.org/security/WSA-2020-0008.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.
5) Use-after-free
EUVDB-ID: #VU48617
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-2020-13584
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 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWebKitGTK+: 2.0.0 - 2.30.2
WPE WebKit: 2.19.93 - 2.30.2
External linkshttp://webkitgtk.org/security/WSA-2020-0008.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.
6) Use-after-free
EUVDB-ID: #VU48720
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-2020-13543
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+: 2.30.0 - 2.30.2
WPE WebKit: 2.30.0 - 2.30.2
External linkshttp://webkitgtk.org/security/WSA-2020-0009.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.
