Amazon Linux AMI update for dhcp



Published: 2018-05-25 | Updated: 2018-05-30
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1111
CWE-ID CWE-77
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Command injection

EUVDB-ID: #VU12743

Risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-1111

CWE-ID: CWE-77 - Command injection

Exploit availability: Yes

Description

The vulnerability allows a physical attacker to execute arbitrary commands with elevated privileges on the target system.

The weakness exists in the NetworkManager integration script due to command injection. A physical attacker can return specially crafted data via dhcp and execute arbitrary commands with root privileges.

Mitigation

Update the affected packages.

i686:
    dhcp-devel-4.1.1-53.P1.28.amzn1.i686
    dhcp-debuginfo-4.1.1-53.P1.28.amzn1.i686
    dhcp-common-4.1.1-53.P1.28.amzn1.i686
    dhcp-4.1.1-53.P1.28.amzn1.i686
    dhclient-4.1.1-53.P1.28.amzn1.i686

src:
    dhcp-4.1.1-53.P1.28.amzn1.src

x86_64:
    dhcp-debuginfo-4.1.1-53.P1.28.amzn1.x86_64
    dhcp-devel-4.1.1-53.P1.28.amzn1.x86_64
    dhcp-4.1.1-53.P1.28.amzn1.x86_64
    dhclient-4.1.1-53.P1.28.amzn1.x86_64
    dhcp-common-4.1.1-53.P1.28.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2018-1024.html


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.



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