Vulnerability CVE-2018-20124

Vulnerability Name:

CVE-2018-20124 (CCN-154398)

Assigned:

2018-12-18

Published:

2018-12-18

Updated:

2020-05-12

Summary:

hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe ring element with a large num_sge value.

CVSS v3 Severity:

5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-125

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2018-20124

Source: MLIST
Type: Mailing List, Patch, Third Party Advisory
[oss-security] 20181218 CVE-2018-20124 QEMU: rdma: OOB access when building scatter-gather array

Source: BID
Type: Third Party Advisory, VDB Entry
106290

Source: XF
Type: UNKNOWN
qemu-cve201820124-dos(154398)

Source: CCN
Type: qemu-devel Web site
[Qemu-devel] [PATCH v2 1/6] rdma: check num_sge does not exceed MAX_SGE

Source: MLIST
Type: Patch, Third Party Advisory
[qemu-devel] 20181213 [PATCH v2 1/6] rdma: check num_sge does not exceed MAX_SGE

Source: CCN
Type: oss-sec Mailing List, Tue, 18 Dec 2018 14:23:07 +0530 (IST)
CVE-2018-20124 QEMU: rdma: OOB access when building scatter-gather array

Source: UBUNTU
Type: Third Party Advisory
USN-3923-1

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2018-20124

Vulnerable Configuration:

Configuration 1:

cpe:/a:qemu:qemu:*:*:*:*:*:*:*:* (Version <= 3.1.0)

Configuration 2:

cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

OR cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

OR cpe:/o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:qemu:qemu:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:201820124	V	CVE-2018-20124	2023-06-22
oval:org.opensuse.security:def:7791	P	qemu-tools-7.1.0-150500.47.15 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:618	P	Security update for python (Important) (in QA)	2022-10-06
oval:org.opensuse.security:def:555	P	Security update for php8 (Important)	2022-07-06
oval:org.opensuse.security:def:3187	P	libidn-tools-1.28-5.6.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3518	P	guile-2.0.9-9.3.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:95148	P	qemu-6.2.0-150400.35.10 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:94817	P	qemu-tools-6.2.0-150400.35.10 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:296	P	qemu-tools-5.2.0-9.18 on GA media (Moderate)	2022-06-13
oval:org.opensuse.security:def:351	P	qemu-6.2.0-150400.35.10 on GA media (Moderate)	2022-06-10
oval:org.opensuse.security:def:94238	P	(Important)	2022-05-17
oval:org.opensuse.security:def:880	P	Security update for tar (Moderate)	2022-05-05
oval:org.opensuse.security:def:1065	P	Security update for firewalld, golang-github-prometheus-prometheus (Important)	2022-04-27
oval:org.opensuse.security:def:1652	P	Security update for apache2 (Important)	2022-03-29
oval:org.opensuse.security:def:1587	P	Security update for python-libxml2-python (Important)	2022-03-10
oval:org.opensuse.security:def:94239	P	(Important)	2022-01-25
oval:org.opensuse.security:def:113318	P	qemu-6.1.0-32.1 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:1651	P	Security update for openssh (Important)	2021-12-22
oval:org.opensuse.security:def:69972	P	Security update for xorg-x11-server (Important)	2021-12-14
oval:org.opensuse.security:def:1225	P	Security update for java-1_8_0-openjdk (Important)	2021-11-23
oval:org.opensuse.security:def:67802	P	Security update for the Linux Kernel (Live Patch 21 for SLE 15) (Important)	2021-11-17
oval:org.opensuse.security:def:106728	P	qemu-6.1.0-32.1 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:103722	P	qemu-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:97032	P	qemu-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:71327	P	libunwind-1.2.1-2.13 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:63232	P	qemu-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:89799	P	qemu-tools-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:61644	P	qemu-tools-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:2143	P	qemu-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:71155	P	ceph-common-14.2.0.300+gacd2f2b9e1-1.12 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:71385	P	qemu-tools-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:90067	P	qemu-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:103454	P	qemu-tools-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:96764	P	qemu-tools-3.1.0-7.1 on GA media (Moderate)	2021-09-21
oval:org.opensuse.security:def:66908	P	Security update for mariadb (Moderate)	2021-08-25
oval:org.opensuse.security:def:66907	P	Security update for openssl-1_1 (Important)	2021-08-24
oval:org.opensuse.security:def:100649	P	(Moderate)	2021-08-23
oval:org.opensuse.security:def:48047	P	iputils-s20121221-2.17 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47091	P	libvdpau1-1.1.1-6.73 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48202	P	libsystemd0-228-155.21 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48287	P	python-pywbem-0.7.0-4.3 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47405	P	libruby2_1-2_1-2.1.9-18.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47586	P	cups-pk-helper-0.2.5-5.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48304	P	screen-4.0.4-23.3.3 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47629	P	gpgme-1.5.1-1.11 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47601	P	ecryptfs-utils-103-8.3.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47991	P	dhcp-4.3.3-10.16.4 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47915	P	vsftpd-3.0.2-40.11.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47077	P	libspice-client-glib-2_0-8-0.31-7.2 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48137	P	libkde4-32bit-4.12.0-10.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48139	P	libksba8-1.3.0-23.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47212	P	automake-1.13.4-6.2 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48233	P	libzip2-0.11.1-13.3.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47537	P	xorg-x11-server-7.6_1.18.3-71.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47587	P	curl-7.60.0-2.11 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47777	P	libraptor2-0-2.0.10-3.63 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47722	P	libipa_hbac0-1.16.1-2.8 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:47076	P	libsoup-2_4-1-2.54.1-4.5 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:48075	P	libXext6-1.3.2-4.3.1 on GA media (Moderate)	2021-08-16
oval:org.opensuse.security:def:64740	P	Security update for rpm (Important)	2021-08-12
oval:org.opensuse.security:def:63368	P	qemu-5.2.0-9.18 on GA media (Moderate)	2021-08-10
oval:org.opensuse.security:def:2279	P	qemu-5.2.0-9.18 on GA media (Moderate)	2021-08-10
oval:org.opensuse.security:def:101394	P	qemu-5.2.0-9.18 on GA media (Moderate)	2021-08-10
oval:org.opensuse.security:def:72055	P	qemu-tools-5.2.0-9.18 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:101072	P	qemu-tools-5.2.0-9.18 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:100951	P	libpango-1_0-0-1.44.7+11-1.25 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:100952	P	libpcap-devel-1.9.1-1.33 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:62314	P	qemu-tools-5.2.0-9.18 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:70263	P	Security update for linuxptp (Important)	2021-07-27
oval:org.opensuse.security:def:70264	P	Security update for MozillaFirefox (Important)	2021-07-27
oval:org.opensuse.security:def:69867	P	Security update for ucode-intel (Important)	2021-06-10
oval:org.opensuse.security:def:48585	P	openvswitch-2.5.1-24.15 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:48942	P	libpolkit0-32bit-0.113-5.12.1 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:48712	P	bogofilter-1.2.4-3.56 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:48814	P	python-devel-2.7.9-24.2 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:66815	P	Security update for the Linux Kernel (Important)	2021-06-08
oval:org.opensuse.security:def:48501	P	libhivex0-1.3.10-4.1 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:71042	P	libvpx4-1.6.1-4.16 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:48647	P	wpa_supplicant-2.2-14.2 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:66816	P	Security update for qemu (Important)	2021-06-08
oval:org.opensuse.security:def:48743	P	libraw9-0.15.4-3.88 on GA media (Moderate)	2021-06-08
oval:org.opensuse.security:def:67987	P	Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP1) (Important)	2021-05-25
oval:org.opensuse.security:def:73598	P	Security update for sudo (Important)	2021-04-20
oval:org.opensuse.security:def:73599	P	Security update for ruby2.5 (Moderate)	2021-04-20
oval:org.opensuse.security:def:64455	P	Security update for curl (Moderate)	2021-04-01
oval:org.opensuse.security:def:64653	P	Security update for postgresql12 (Moderate)	2021-02-22
oval:org.opensuse.security:def:68087	P	Security update for the Linux Kernel (Live Patch 14 for SLE 15 SP1) (Important)	2021-02-10
oval:org.opensuse.security:def:93936	P	(Moderate)	2020-12-10
oval:org.opensuse.security:def:107315	P	qemu-tools-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:116873	P	qemu-tools-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:63296	P	qemu-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:107617	P	qemu-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:61969	P	qemu-tools-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:2207	P	qemu-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:117175	P	qemu-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:63297	P	qemu-audio-oss-3.1.1.1-9.21.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:71440	P	autofs-5.1.3-7.3.1 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:71710	P	qemu-tools-4.2.0-9.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:107618	P	qemu-audio-oss-3.1.1.1-9.21.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:48996	P	ibus-gtk3-32bit-1.5.13-15.11.2 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:2208	P	qemu-audio-oss-3.1.1.1-9.21.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:117176	P	qemu-audio-oss-3.1.1.1-9.21.4 on GA media (Moderate)	2020-12-03
oval:org.opensuse.security:def:50093	P	qemu-audio-oss on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:73307	P	qemu-tools on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:67702	P	libnewt0_52 on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:50038	P	subversion-server on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:49321	P	qemu-tools on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:70159	P	ctags on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:66524	P	libseccomp-devel on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:73189	P	libnm0 on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:50039	P	sysstat-isag on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:50028	P	qemu on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:49267	P	libykcs11-1 on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:73480	P	FastCGI on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:64368	P	libpng12-0 on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:50092	P	qemu on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:49974	P	rarpd on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:73481	P	ant on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:66616	P	qemu-tools on GA media (Moderate)	2020-12-01
oval:org.opensuse.security:def:70158	P	crash on GA media (Moderate)	2020-12-01
oval:com.ubuntu.bionic:def:201820124000	V	CVE-2018-20124 on Ubuntu 18.04 LTS (bionic) - medium.	2018-12-20
oval:com.ubuntu.cosmic:def:2018201240000000	V	CVE-2018-20124 on Ubuntu 18.10 (cosmic) - medium.	2018-12-20
oval:com.ubuntu.cosmic:def:201820124000	V	CVE-2018-20124 on Ubuntu 18.10 (cosmic) - medium.	2018-12-20
oval:com.ubuntu.bionic:def:2018201240000000	V	CVE-2018-20124 on Ubuntu 18.04 LTS (bionic) - medium.	2018-12-20
oval:com.ubuntu.trusty:def:201820124000	V	CVE-2018-20124 on Ubuntu 14.04 LTS (trusty) - medium.	2018-12-20
oval:com.ubuntu.xenial:def:2018201240000000	V	CVE-2018-20124 on Ubuntu 16.04 LTS (xenial) - medium.	2018-12-20
oval:com.ubuntu.xenial:def:201820124000	V	CVE-2018-20124 on Ubuntu 16.04 LTS (xenial) - medium.	2018-12-20

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