SB2020111135 - Gentoo update for Chromium, Google Chrome

Description

This security bulletin contains information about 7 secuirty vulnerabilities.

1) Heap-based buffer overflow (CVE-ID: CVE-2020-15999)

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

The vulnerability exists due to a boundary error in freetype library when processing TTF files. A remote attacker can pass specially crafted TTF file with PNG sbit glyphs to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

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

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

2) Use-after-free (CVE-ID: CVE-2020-16004)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the user interface 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) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-16005)

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

The vulnerability exists due to insufficient policy enforcement in ANGLE in Google Chrome. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and compromise the affected system.

4) Improperly implemented security check for standard (CVE-ID: CVE-2020-16006)

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

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

5) Stack-based buffer overflow (CVE-ID: CVE-2020-16008)

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

The vulnerability exists due to a boundary error when processing HTML content in WebRTC in Google Chrome. A remote unauthenticated attacker can trick the victim to visit a specially crafted website, trigger stack-based buffer overflow and execute arbitrary code on the target system.

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

6) Improperly implemented security check for standard (CVE-ID: CVE-2020-16009)

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

The vulnerability exists due to incorrect implementation in 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, this vulnerability is being actively exploited in the wild.

7) Buffer overflow (CVE-ID: CVE-2020-16016)

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

The vulnerability exists due to a boundary error when processing HTML content inside a third-party library, used by Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

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

Remediation

Install update from vendor's website.

References

• https://security.gentoo.org/glsa/202011-12