Amazon Linux AMI : qemu-kvm (ALAS-2020-1400)

Medium Nessus Plugin ID 138642

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VPR Score: 4.2

Synopsis

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

Description

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)

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)

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)

Solution

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

See Also

https://alas.aws.amazon.com/ALAS-2020-1400.html

Plugin Details

Severity: Medium

ID: 138642

File Name: ala_ALAS-2020-1400.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2020/07/20

Updated: 2020/07/22

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 4.2

CVSS v2.0

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/07/15

Vulnerability Publication Date: 2019/06/03

Reference Information

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

ALAS: 2020-1400