SB2021121401 - Multiple vulnerabilities in Google Chrome

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2021-4098)

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

The vulnerability exists due to improper input validation when processing HTML content in Mojo. Chrome Critical. A remote attacker can trick the victim to open a specially crafted web page and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Use-after-free (CVE-ID: CVE-2021-4099)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the Swiftshader 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.

3) Improper control of a resource through its lifetime (CVE-ID: CVE-2021-4100)

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

The vulnerability exists due to improper control of object lifetime 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.

4) Heap-based buffer overflow (CVE-ID: CVE-2021-4101)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in Swiftshader. 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.

5) Use-after-free (CVE-ID: CVE-2021-4102)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the V8 engine. 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.

Remediation

Install update from vendor's website.

References

• https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop_13.html
• https://crbug.com/1263457
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4098
• https://crbug.com/1270658
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4099
• https://crbug.com/1272068
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4100
• https://crbug.com/1262080
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4101
• https://crbug.com/1278387
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4102