Multiple vulnerabilities in Google Chrome



Published: 2021-04-20
Risk Critical
Patch available YES
Number of vulnerabilities 5
CVE ID CVE-2021-21222
CVE-2021-21223
CVE-2021-21224
CVE-2021-21225
CVE-2021-21226
CWE ID CWE-122
CWE-190
CWE-843
CWE-787
CWE-416
Exploitation vector Network
Public exploit Vulnerability #3 is being exploited in the wild.
Vulnerable software
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Google Chrome
Client/Desktop applications / Web browsers

Vendor Google, Inc.

Security Advisory

1) Heap-based buffer overflow

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] [PCI]

CVE-ID: CVE-2021-21222

CWE-ID: CWE-122 - Heap-based Buffer Overflow

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 HTML content in V8 browser engine. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Mitigation

Update to version 90.0.4430.85.

Vulnerable software versions

Google Chrome: 88.0.4324.146, 88.0.4324.150, 88.0.4324.182, 88.0.4324.190, 89.0.4389.72, 89.0.4389.82, 89.0.4389.90, 89.0.4389.114, 89.0.4389.128, 90.0.4430.72

CPE External links

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html
https://crbug.com/1194046

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) Integer overflow

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] [PCI]

CVE-ID: CVE-2021-21223

CWE-ID: CWE-190 - Integer Overflow or Wraparound

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in V8 browser engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger integer overflow 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

Google Chrome: 88.0.4324.146, 88.0.4324.150, 88.0.4324.182, 88.0.4324.190, 89.0.4389.72, 89.0.4389.82, 89.0.4389.90, 89.0.4389.114, 89.0.4389.128, 90.0.4430.72

CPE External links

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html
https://crbug.com/1195308

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) Type Confusion

Risk: Critical

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] [PCI]

CVE-ID: CVE-2021-21224

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 within the V8 browser engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, 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.

Note, the vulnerability is being actively exploited in the wild.

Mitigation

Update to version 90.0.4430.85.

Vulnerable software versions

Google Chrome: 88.0.4324.146, 88.0.4324.150, 88.0.4324.182, 88.0.4324.190, 89.0.4389.72, 89.0.4389.82, 89.0.4389.90, 89.0.4389.114, 89.0.4389.128, 90.0.4430.72

CPE External links

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html
https://crbug.com/1195777

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

CVSSv3.1: 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] [PCI]

CVE-ID: CVE-2021-21225

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 within the V8 browser engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Google Chrome: 88.0.4324.146, 88.0.4324.150, 88.0.4324.182, 88.0.4324.190, 89.0.4389.72, 89.0.4389.82, 89.0.4389.90, 89.0.4389.114, 89.0.4389.128, 90.0.4430.72

CPE External links

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html
https://crbug.com/1195977

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.

5) Use-after-free

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] [PCI]

CVE-ID: CVE-2021-21226

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 navigation component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update to version 90.0.4430.85.

Vulnerable software versions

Google Chrome: 88.0.4324.146, 88.0.4324.150, 88.0.4324.182, 88.0.4324.190, 89.0.4389.72, 89.0.4389.82, 89.0.4389.90, 89.0.4389.114, 89.0.4389.128, 90.0.4430.72

CPE External links

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html
https://crbug.com/1197904

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.



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