Amazon Linux AMI update for exim

1) Command Injection

EUVDB-ID: #VU84728

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-51766

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to spoof email messages.

The vulnerability exists due to an error when handling line endings other than <CR><LF>. A remote attacker can spoof contents of email message and bypass SPF protection mechanism.

Mitigation

Update the affected packages:

i686:
    exim-mysql-4.92-1.40.amzn1.i686
    exim-pgsql-4.92-1.40.amzn1.i686
    exim-greylist-4.92-1.40.amzn1.i686
    exim-4.92-1.40.amzn1.i686
    exim-mon-4.92-1.40.amzn1.i686
    exim-debuginfo-4.92-1.40.amzn1.i686

src:
    exim-4.92-1.40.amzn1.src

x86_64:
    exim-mysql-4.92-1.40.amzn1.x86_64
    exim-mon-4.92-1.40.amzn1.x86_64
    exim-pgsql-4.92-1.40.amzn1.x86_64
    exim-4.92-1.40.amzn1.x86_64
    exim-debuginfo-4.92-1.40.amzn1.x86_64
    exim-greylist-4.92-1.40.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

exim: before 4.92-1.40

External links

http://alas.aws.amazon.com/ALAS-2024-1908.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.