Multiple vulnerabilities in Google Chrome

1) Use-after-free

EUVDB-ID: #VU56476

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-2021-30625

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the Selection API 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

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1237533
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30625

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) Buffer overflow

EUVDB-ID: #VU56486

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-2021-30626

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in ANGLE in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger a stack-based buffer overflow and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1241036
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30626

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

EUVDB-ID: #VU56477

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-2021-30627

CWE-ID: CWE-843 - 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 Blink layout 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

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1245786
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30627

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) Stack-based buffer overflow

EUVDB-ID: #VU56478

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-2021-30628

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in ANGLE in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger a stack-based buffer overflow and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1241123
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30628

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

EUVDB-ID: #VU56479

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-2021-30629

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 Permissions 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

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1243646
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30629

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.

6) Improperly implemented security check for standard

EUVDB-ID: #VU56480

Risk: Medium

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

CVE-ID: CVE-2021-30630

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

Exploit availability: No

Description

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

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1244568
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30630

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) Type Confusion

EUVDB-ID: #VU56481

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-2021-30631

CWE-ID: CWE-843 - 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 Blink layout 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

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1246932
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30631

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.

8) Out-of-bounds write

EUVDB-ID: #VU56482

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-2021-30632

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

Exploit availability: Yes

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. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds write and execute arbitrary code on the target system.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1247763

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.

9) Use-after-free

EUVDB-ID: #VU56483

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-2021-30633

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 Indexed DB API 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.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

Google Chrome: 7.0.517.41 - 93.0.4577.63

CPE2.3

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1247766
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30633

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.

10) Use-after-free

EUVDB-ID: #VU79609

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-4319

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 Blink. 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 93.0.4577.82.

Vulnerable software versions

Google Chrome: before 93.0.4577.82

CPE2.3

cpe:2.3:a:google:google_chrome:*:*:*:*:*:*:*:*

External links

http://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop.html
http://crbug.com/1214199

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.

Risk	Critical
Patch available	YES
Number of vulnerabilities	10
CVE-ID	CVE-2021-30625 CVE-2021-30626 CVE-2021-30627 CVE-2021-30628 CVE-2021-30629 CVE-2021-30630 CVE-2021-30631 CVE-2021-30632 CVE-2021-30633 CVE-2021-4319
CWE-ID	CWE-416 CWE-119 CWE-843 CWE-121 CWE-358 CWE-787
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Vulnerability #8 is being exploited in the wild. Vulnerability #9 is being exploited in the wild.
Vulnerable software	Google Chrome Client/Desktop applications / Web browsers
Vendor	Google