Multiple vulnerabilities in Microsoft Edge
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 8 |
| CVE-ID | CVE-2021-30633 CVE-2021-30625 CVE-2021-30626 CVE-2021-30627 CVE-2021-30628 CVE-2021-30629 CVE-2021-30630 CVE-2021-30631 |
| CWE-ID | CWE-416 CWE-119 CWE-843 CWE-121 CWE-358 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
Microsoft Edge Client/Desktop applications / Web browsers |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 8 vulnerabilities.
1) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
2) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
3) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
4) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
5) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
6) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
7) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
8) 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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsMicrosoft Edge: 79.0.309.71 - 93.0.961.47
External linkshttp://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.
