SB2023062017 - Remote code execution in acme.sh

Description

This security bulletin contains information about 1 vulnerability.

1) OS Command Injection (CVE-ID: CVE-2023-38198)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red

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

The vulnerability exists due to improper input validation when parsing certificates. A remote attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Note, exploitation of this vulnerability has been observed in the wild by compromised HiCA servers.

Remediation

Install update from vendor's website.

References

• https://github.com/acmesh-official/acme.sh/issues/4659
• https://github.com/acmesh-official/acme.sh/releases/tag/3.0.6