Multiple vulnerabilities in Apple Safari



Published: 2020-09-18
Risk High
Patch available YES
Number of vulnerabilities 4
CVE ID CVE-2020-9948
CVE-2020-9951
CVE-2020-9952
CVE-2020-9983
CWE ID CWE-843
CWE-416
CWE-79
CWE-787
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Apple Safari
Client/Desktop applications / Web browsers

Vendor Apple Inc.

Security Advisory

1) Type Confusion

Risk: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-9948

CWE-ID: CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apple Safari: 10, 10.0.1, 10.0.2, 10.1.0, 10.1.1, 10.1.2, 11.0, 11.0.1, 11.0.2, 11.0.3, 11.1, 11.1.1, 11.1.2, 12.0, 12.0.1, 12.0.2, 12.0.3, 12.1.2, 13.0.2, 13.0.3, 13.1, 13.1.1

CPE External links

https://support.apple.com/en-us/HT211845

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use-after-free

Risk: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-9951

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 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apple Safari: 10, 10.0.1, 10.0.2, 10.1.0, 10.1.1, 10.1.2, 11.0, 11.0.1, 11.0.2, 11.0.3, 11.1, 11.1.1, 11.1.2, 12.0, 12.0.1, 12.0.2, 12.0.3, 12.1.2, 13.0.2, 13.0.3, 13.1, 13.1.1

CPE External links

https://support.apple.com/en-us/HT211845

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Cross-site scripting

Risk: Medium

CVSSv3: 5.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-9952

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apple Safari: 10, 10.0.1, 10.0.2, 10.1.0, 10.1.1, 10.1.2, 11.0, 11.0.1, 11.0.2, 11.0.3, 11.1, 11.1.1, 11.1.2, 12.0, 12.0.1, 12.0.2, 12.0.3, 12.1.2, 13.0.2, 13.0.3, 13.1, 13.1.1

CPE External links

https://support.apple.com/en-us/HT211845

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Out-of-bounds write

Risk: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-9983

CWE-ID: CWE-787 - Out-of-bounds Write

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apple Safari: 10, 10.0.1, 10.0.2, 10.1.0, 10.1.1, 10.1.2, 11.0, 11.0.1, 11.0.2, 11.0.3, 11.1, 11.1.1, 11.1.2, 12.0, 12.0.1, 12.0.2, 12.0.3, 12.1.2, 13.0.2, 13.0.3, 13.1, 13.1.1

CPE External links

https://support.apple.com/en-us/HT211845

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.