Amazon Linux AMI update for clamav

1) Infinite loop

EUVDB-ID: #VU79633

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20197

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop in the HFS+ file parser. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Update the affected packages:

i686:
    clamav-db-0.103.9-1.55.amzn1.i686
    clamav-debuginfo-0.103.9-1.55.amzn1.i686
    clamav-milter-0.103.9-1.55.amzn1.i686
    clamav-update-0.103.9-1.55.amzn1.i686
    clamav-lib-0.103.9-1.55.amzn1.i686
    clamav-0.103.9-1.55.amzn1.i686
    clamav-devel-0.103.9-1.55.amzn1.i686
    clamd-0.103.9-1.55.amzn1.i686

noarch:
    clamav-filesystem-0.103.9-1.55.amzn1.noarch
    clamav-data-0.103.9-1.55.amzn1.noarch

src:
    clamav-0.103.9-1.55.amzn1.src

x86_64:
    clamd-0.103.9-1.55.amzn1.x86_64
    clamav-0.103.9-1.55.amzn1.x86_64
    clamav-db-0.103.9-1.55.amzn1.x86_64
    clamav-milter-0.103.9-1.55.amzn1.x86_64
    clamav-debuginfo-0.103.9-1.55.amzn1.x86_64
    clamav-lib-0.103.9-1.55.amzn1.x86_64
    clamav-devel-0.103.9-1.55.amzn1.x86_64
    clamav-update-0.103.9-1.55.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

clamav: before 0.103.9-1.55

External links

http://alas.aws.amazon.com/ALAS-2023-1820.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.