Amazon Linux AMI update for dnsmasq



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-14834
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

dnsmasq
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU31907

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-14834

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

A vulnerability was found in dnsmasq before version 2.81, where the memory leak allows remote attackers to cause a denial of service (memory consumption) via vectors involving DHCP response creation.

Mitigation

Update the affected packages:

i686:
    dnsmasq-debuginfo-2.76-16.16.amzn1.i686
    dnsmasq-utils-2.76-16.16.amzn1.i686
    dnsmasq-2.76-16.16.amzn1.i686

src:
    dnsmasq-2.76-16.16.amzn1.src

x86_64:
    dnsmasq-utils-2.76-16.16.amzn1.x86_64
    dnsmasq-2.76-16.16.amzn1.x86_64
    dnsmasq-debuginfo-2.76-16.16.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

dnsmasq: before 2.76-16.16

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2020-1458.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.



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