Amazon Linux AMI update for amazon-ssm-agent

1) Path traversal

EUVDB-ID: #VU85583

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49569

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can overwrite arbitrary files on the system. Applications are only affected if they are using the ChrootOS, which is the default when using "Plain" versions of Open and Clone funcs (e.g. PlainClone).

Mitigation

Update the affected packages:

src:
    amazon-ssm-agent-3.2.2222.0-1.amzn1.src

x86_64:
    amazon-ssm-agent-3.2.2222.0-1.amzn1.x86_64
    amazon-ssm-agent-debuginfo-3.2.2222.0-1.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

amazon-ssm-agent: before 3.2.2222.0-1

External links

http://alas.aws.amazon.com/ALAS-2024-1920.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.