Amazon Linux AMI update for libconfuse

1) Out-of-bounds read

EUVDB-ID: #VU67558

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-40320

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a heap-based buffer over-read within the cfg_tilde_expand() function in confuse.c. A remote attacker can perform a denial of service attack.

Mitigation

Update the affected packages:

i686:
    libconfuse-2.7-4.4.amzn1.i686
    libconfuse-debuginfo-2.7-4.4.amzn1.i686
    libconfuse-devel-2.7-4.4.amzn1.i686

src:
    libconfuse-2.7-4.4.amzn1.src

x86_64:
    libconfuse-devel-2.7-4.4.amzn1.x86_64
    libconfuse-debuginfo-2.7-4.4.amzn1.x86_64
    libconfuse-2.7-4.4.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

libconfuse: before 2.7-4.4

CPE2.3

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

External links

https://alas.aws.amazon.com/ALAS-2023-1692.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.