Amazon Linux AMI update for busybox

1) Use-after-free

EUVDB-ID: #VU66182

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-30065

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted awk pattern in the copyvar function. A remote attacker can execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected packages:

i686:
    busybox-debuginfo-1.34.1-1.15.amzn1.i686
    busybox-1.34.1-1.15.amzn1.i686
    busybox-petitboot-1.34.1-1.15.amzn1.i686

src:
    busybox-1.34.1-1.15.amzn1.src

x86_64:
    busybox-petitboot-1.34.1-1.15.amzn1.x86_64
    busybox-1.34.1-1.15.amzn1.x86_64
    busybox-debuginfo-1.34.1-1.15.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

busybox: before 1.34.1-1.15

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
• cpe:2.3:o:amazon_web_services:busybox:*:*:*:*:*:amazon_linux_ami:*:*

External links

https://alas.aws.amazon.com/ALAS-2023-1786.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.