Amazon Linux AMI : qemu-kvm (ALAS-2020-1408)

medium Nessus Plugin ID 139088

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Synopsis

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

Description

The version of qemu-kvm installed on the remote host is prior to 1.5.3-156.19. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2020-1408 advisory.

tcp_emu in slirp/tcp_subr.c (aka slirp/src/tcp_subr.c) in QEMU 3.0.0 uses uninitialized data in an snprintf call, leading to Information disclosure. (CVE-2019-9824)

tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code. (CVE-2020-7039)

In libslirp 4.1.0, as used in QEMU 4.2.0, tcp_subr.c misuses snprintf return values, leading to a buffer overflow in later code. (CVE-2020-8608)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

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

Plugin Details

Severity: Medium

ID: 139088

File Name: ala_ALAS-2020-1408.nasl

Version: 1.4

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 7/30/2020

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2020-8608

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

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

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

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, 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: 7/29/2020

Vulnerability Publication Date: 6/3/2019

Reference Information

CVE: CVE-2019-9824, CVE-2020-7039, CVE-2020-8608

ALAS: 2020-1408

Detections

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