Amazon Linux AMI update for procmail

1) Heap-based buffer overflow

EUVDB-ID: #VU9375

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-16844

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error in the loadbuf() function in formisc.c in formail in procmail 3.22. A remote attacker can execute arbitrary code on the target system via a specially crafted e-mail message because of a hardcoded realloc size.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.

i686:
    procmail-3.22-25.1.7.amzn1.i686
    procmail-debuginfo-3.22-25.1.7.amzn1.i686

src:
    procmail-3.22-25.1.7.amzn1.src

x86_64:
    procmail-debuginfo-3.22-25.1.7.amzn1.x86_64
    procmail-3.22-25.1.7.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-2018-1084.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.