Amazon Linux AMI update for clamav

1) Input validation error

EUVDB-ID: #VU23559

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-15961

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input passed via email messages due to overly long parsing of MIME messages. A remote attacker can send a specially crafted email message and perform a denial of service attack.

Mitigation

Update the affected packages:

i686:
    clamav-update-0.101.5-1.42.amzn1.i686
    clamav-debuginfo-0.101.5-1.42.amzn1.i686
    clamav-db-0.101.5-1.42.amzn1.i686
    clamav-lib-0.101.5-1.42.amzn1.i686
    clamav-devel-0.101.5-1.42.amzn1.i686
    clamav-milter-0.101.5-1.42.amzn1.i686
    clamav-0.101.5-1.42.amzn1.i686
    clamd-0.101.5-1.42.amzn1.i686

noarch:
    clamav-filesystem-0.101.5-1.42.amzn1.noarch
    clamav-data-0.101.5-1.42.amzn1.noarch

src:
    clamav-0.101.5-1.42.amzn1.src

x86_64:
    clamav-milter-0.101.5-1.42.amzn1.x86_64
    clamav-devel-0.101.5-1.42.amzn1.x86_64
    clamd-0.101.5-1.42.amzn1.x86_64
    clamav-0.101.5-1.42.amzn1.x86_64
    clamav-update-0.101.5-1.42.amzn1.x86_64
    clamav-db-0.101.5-1.42.amzn1.x86_64
    clamav-debuginfo-0.101.5-1.42.amzn1.x86_64
    clamav-lib-0.101.5-1.42.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

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

External links

https://alas.aws.amazon.com/ALAS-2020-1335.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.