Amazon Linux AMI update for kernel



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-6828
CWE-ID CWE-416
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) “Use-after-free” error

EUVDB-ID: #VU360

Risk: Low

CVSSv4.0: 5.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2016-6828

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows local users to provoke a denial of service.

The vulnerability predicts TCP realization by a local user.

Successful exploitation of this vulnerability will allow an attacker to cause a denial of service.

Mitigation

Update the affected packages.

i686:
    kernel-devel-4.4.19-29.55.amzn1.i686
    kernel-headers-4.4.19-29.55.amzn1.i686
    kernel-debuginfo-common-i686-4.4.19-29.55.amzn1.i686
    kernel-tools-4.4.19-29.55.amzn1.i686
    kernel-tools-debuginfo-4.4.19-29.55.amzn1.i686
    kernel-debuginfo-4.4.19-29.55.amzn1.i686
    kernel-tools-devel-4.4.19-29.55.amzn1.i686
    kernel-4.4.19-29.55.amzn1.i686
    perf-debuginfo-4.4.19-29.55.amzn1.i686
    perf-4.4.19-29.55.amzn1.i686

noarch:
    kernel-doc-4.4.19-29.55.amzn1.noarch

src:
    kernel-4.4.19-29.55.amzn1.src

x86_64:
    kernel-debuginfo-4.4.19-29.55.amzn1.x86_64
    perf-4.4.19-29.55.amzn1.x86_64
    perf-debuginfo-4.4.19-29.55.amzn1.x86_64
    kernel-tools-4.4.19-29.55.amzn1.x86_64
    kernel-tools-devel-4.4.19-29.55.amzn1.x86_64
    kernel-tools-debuginfo-4.4.19-29.55.amzn1.x86_64
    kernel-4.4.19-29.55.amzn1.x86_64
    kernel-devel-4.4.19-29.55.amzn1.x86_64
    kernel-headers-4.4.19-29.55.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.4.19-29.55.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2016-740.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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