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Amazon Linux 2 : qemu-kvm (ALAS-2018-1073)

high Nessus Plugin ID 117589

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

A heap buffer overflow issue was found in the way SLiRP networking back-end in QEMU processes fragmented packets. It could occur while reassembling the fragmented datagrams of an incoming packet. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS or potentially leverage it to execute arbitrary code on the host with privileges of the QEMU process.(CVE-2018-11806)

Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur while loading a kernel image during the guest boot, if mh_load_end_addr address is greater than the mh_bss_end_addr address. A user or process could use this flaw to potentially achieve arbitrary code execution on a host.(CVE-2018-7550)

Solution

Run 'yum update qemu-kvm' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2018-1073.html

Plugin Details

Severity: High

ID: 117589

File Name: al2_ALAS-2018-1073.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/19/2018

Updated: 8/6/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2018-11806

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2018-7550

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:qemu-kvm, p-cpe:/a:amazon:linux:qemu-img, p-cpe:/a:amazon:linux:qemu-kvm-common, p-cpe:/a:amazon:linux:qemu-kvm-debuginfo, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:qemu-kvm-tools

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2018

Reference Information

CVE: CVE-2018-11806, CVE-2018-7550

ALAS: 2018-1073