SB2023090430 - Ubuntu update for busybox

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper Handling of Exceptional Conditions (CVE-ID: CVE-2021-28831)

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

The vulnerability exists due to improper handling of error bit on the huft_build result pointer in decompress_gunzip.c. A remote attacker can pass malformed gzip data to the application, trigger an invalid free and perform a denial of service (DoS) attack.

2) Out-of-bounds write (CVE-ID: CVE-2022-48174)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input ash.c. A remote attacker can send specially crafted data to the application, trigger an out-of-bounds write and execute arbitrary code on the target system.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-6335-1