Multiple vulnerabilities in Google Chrome



Published: 2021-10-28 | Updated: 2023-01-08
Risk Critical
Patch available YES
Number of vulnerabilities 8
CVE-ID CVE-2021-37997
CVE-2021-37998
CVE-2021-37999
CVE-2021-38000
CVE-2021-38001
CVE-2021-38002
CVE-2021-38003
CVE-2021-38004
CWE-ID CWE-416
CWE-20
CWE-749
CWE-843
CWE-358
CWE-841
Exploitation vector Network
Public exploit Vulnerability #4 is being exploited in the wild.
Public exploit code for vulnerability #5 is available.
Vulnerability #7 is being exploited in the wild.
Vulnerable software
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Google Chrome
Client/Desktop applications / Web browsers

Google Chromium
Client/Desktop applications / Web browsers

Vendor Google

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

Updated: 17.01.2022

Added vulnerability #8.

1) Use-after-free

EUVDB-ID: #VU57760

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-2021-37997

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 Sign-In 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 95.0.4638.69.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1259864
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37997


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

EUVDB-ID: #VU57761

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-2021-37998

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 Garbage Collection 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 95.0.4638.69.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1259587
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37998


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) Input validation error

EUVDB-ID: #VU57762

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-37999

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper input validation in New Tab Page in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage and execute arbitrary code on the system.

Mitigation

Update to version 95.0.4638.69.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1251541
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37999


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) Exposed dangerous method or function

EUVDB-ID: #VU57766

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-2021-38000

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insecure implementation in V8 engine in Google Chrome. A remote attacker can create a specially crafted website, trick the victim into visiting it and execute arbitrary code on the system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1263462
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38000


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?

Yes. This vulnerability is being exploited in the wild.

5) Type Confusion

EUVDB-ID: #VU57763

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-38001

CWE-ID: CWE-843 - Type confusion

Exploit availability: Yes

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 component 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.

Mitigation

Update to version 95.0.4638.69.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1260577
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38001


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. However, proof of concept for this vulnerability is available.

6) Use-after-free

EUVDB-ID: #VU57764

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-2021-38002

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 Web Transport 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 95.0.4638.69.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1260940
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38002


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.

7) Improperly implemented security check for standard

EUVDB-ID: #VU57765

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-2021-38003

CWE-ID: CWE-358 - Improperly Implemented Security Check for Standard

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to incorrect implementation in the V8 engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and compromise the system.

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

Mitigation

Update to version 95.0.4638.69.

Vulnerable software versions

Google Chrome: 70.0.3538.67 - 95.0.4638.54

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1263462
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38003


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?

Yes. This vulnerability is being exploited in the wild.

8) Improper enforcement of behavioral workflow

EUVDB-ID: #VU59668

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38004

CWE-ID: CWE-841 - Improper Enforcement of Behavioral Workflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient policy enforcement in Autofill. A remote attacker can create a specially crafted web page, trick the victim into visiting it and bypass implemented security restrictions.

Mitigation

Update to version 95.0.4638.69.

Vulnerable software versions

Google Chromium: 95.0.4638.0 - 95.0.4638.68

External links

http://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
http://crbug.com/1227170


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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