Debian DLA-2373-1 : qemu security update

medium Nessus Plugin ID 140541
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VPR Score: 7.4

Synopsis

The remote Debian host is missing a security update.

Description

The following security issues have been found in qemu, which could potentially result in DoS and execution of arbitrary code.

CVE-2020-1711

An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.

CVE-2020-13253

An out-of-bounds read access issue was found in the SD Memory Card emulator of the QEMU. It occurs while performing block write commands via sdhci_write(), if a guest user has sent 'address' which is OOB of 's->wp_groups'. A guest user/process may use this flaw to crash the QEMU process resulting in DoS.

CVE-2020-14364

An out-of-bounds read/write access issue was found in the USB emulator of the QEMU. It occurs while processing USB packets from a guest, when 'USBDevice->setup_len' exceeds the USBDevice->data_buf[4096], in do_token_{in,out} routines.

CVE-2020-16092

An assertion failure can occur in the network packet processing. This issue affects the e1000e and vmxnet3 network devices. A malicious guest user/process could use this flaw to abort the QEMU process on the host, resulting in a denial of service condition in net_tx_pkt_add_raw_fragment in hw/net/net_tx_pkt.c

For Debian 9 stretch, these problems have been fixed in version 1:2.8+dfsg-6+deb9u11.

We recommend that you upgrade your qemu packages.

For the detailed security status of qemu please refer to its security tracker page at: https://security-tracker.debian.org/tracker/qemu

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2020/09/msg00013.html

https://packages.debian.org/source/stretch/qemu

https://security-tracker.debian.org/tracker/source-package/qemu

Plugin Details

Severity: Medium

ID: 140541

File Name: debian_DLA-2373.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/14/2020

Updated: 12/4/2020

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Medium

VPR Score: 7.4

CVSS v2.0

Base Score: 6

Temporal Score: 4.4

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

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

CVSS v3.0

Base Score: 6

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:qemu, p-cpe:/a:debian:debian_linux:qemu-block-extra, p-cpe:/a:debian:debian_linux:qemu-guest-agent, p-cpe:/a:debian:debian_linux:qemu-kvm, p-cpe:/a:debian:debian_linux:qemu-system, p-cpe:/a:debian:debian_linux:qemu-system-arm, p-cpe:/a:debian:debian_linux:qemu-system-common, p-cpe:/a:debian:debian_linux:qemu-system-mips, p-cpe:/a:debian:debian_linux:qemu-system-misc, p-cpe:/a:debian:debian_linux:qemu-system-ppc, p-cpe:/a:debian:debian_linux:qemu-system-sparc, p-cpe:/a:debian:debian_linux:qemu-system-x86, p-cpe:/a:debian:debian_linux:qemu-user, p-cpe:/a:debian:debian_linux:qemu-user-binfmt, p-cpe:/a:debian:debian_linux:qemu-user-static, p-cpe:/a:debian:debian_linux:qemu-utils, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/13/2020

Vulnerability Publication Date: 2/11/2020

Reference Information

CVE: CVE-2020-13253, CVE-2020-14364, CVE-2020-16092, CVE-2020-1711

IAVB: 2020-B-0063-S