SB2020101803 - Arch Linux update for linux-lts

Description

This security bulletin contains information about 3 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2020-12351)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

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

The vulnerability exists due to insufficient validation of user-supplied input within the BlueZ implementation in Linux kernel. A remote attacker on the local network can pass specially crafted input to the application and execute arbitrary code on the system.

2) Improper access control (CVE-ID: CVE-2020-12352)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper access restrictions in BlueZ implementation in Linux kernel. A remote attacker on the local network can pass specially crafted input to the application and gain access to sensitive information.

3) Buffer overflow (CVE-ID: CVE-2020-24490)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within BlueZ  implementation in Linux kernel. A remote attacker on the local network can pass specially crated data to the system and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://security.archlinux.org/advisory/ASA-202010-4