Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title QEMU vulnerabilities
Informations
Name USN-3826-1 First vendor Publication 2018-11-26
Vendor Ubuntu Last vendor Modification 2018-11-26
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in QEMU.

Software Description: - qemu: Machine emulator and virtualizer

Details:

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled NE2000 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-10839)

It was discovered that QEMU incorrectly handled the Slirp networking back-end. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-11806)

Fakhri Zulkifli discovered that the QEMU guest agent incorrectly handled certain QMP commands. An attacker could possibly use this issue to crash the QEMU guest agent, resulting in a denial of service. (CVE-2018-12617)

Li Qiang discovered that QEMU incorrectly handled NVM Express Controller emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16847)

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled RTL8139 device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17958)

Daniel Shapira and Arash Tohidi discovered that QEMU incorrectly handled PCNET device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17962)

Daniel Shapira discovered that QEMU incorrectly handled large packet sizes. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-17963)

It was discovered that QEMU incorrectly handled LSI53C895A device emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-18849)

Moguofang discovered that QEMU incorrectly handled the IPowerNV LPC controller. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-18954)

Zhibin Hu discovered that QEMU incorrectly handled the Plan 9 File System support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-19364)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10:
qemu-system 1:2.12+dfsg-3ubuntu8.1
qemu-system-arm 1:2.12+dfsg-3ubuntu8.1
qemu-system-mips 1:2.12+dfsg-3ubuntu8.1
qemu-system-misc 1:2.12+dfsg-3ubuntu8.1
qemu-system-ppc 1:2.12+dfsg-3ubuntu8.1
qemu-system-s390x 1:2.12+dfsg-3ubuntu8.1
qemu-system-sparc 1:2.12+dfsg-3ubuntu8.1
qemu-system-x86 1:2.12+dfsg-3ubuntu8.1

Ubuntu 18.04 LTS:
qemu-system 1:2.11+dfsg-1ubuntu7.8
qemu-system-arm 1:2.11+dfsg-1ubuntu7.8
qemu-system-mips 1:2.11+dfsg-1ubuntu7.8
qemu-system-misc 1:2.11+dfsg-1ubuntu7.8
qemu-system-ppc 1:2.11+dfsg-1ubuntu7.8
qemu-system-s390x 1:2.11+dfsg-1ubuntu7.8
qemu-system-sparc 1:2.11+dfsg-1ubuntu7.8
qemu-system-x86 1:2.11+dfsg-1ubuntu7.8

Ubuntu 16.04 LTS:
qemu-system 1:2.5+dfsg-5ubuntu10.33
qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.33
qemu-system-arm 1:2.5+dfsg-5ubuntu10.33
qemu-system-mips 1:2.5+dfsg-5ubuntu10.33
qemu-system-misc 1:2.5+dfsg-5ubuntu10.33
qemu-system-ppc 1:2.5+dfsg-5ubuntu10.33
qemu-system-s390x 1:2.5+dfsg-5ubuntu10.33
qemu-system-sparc 1:2.5+dfsg-5ubuntu10.33
qemu-system-x86 1:2.5+dfsg-5ubuntu10.33

Ubuntu 14.04 LTS:
qemu-system 2.0.0+dfsg-2ubuntu1.44
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.44
qemu-system-arm 2.0.0+dfsg-2ubuntu1.44
qemu-system-mips 2.0.0+dfsg-2ubuntu1.44
qemu-system-misc 2.0.0+dfsg-2ubuntu1.44
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.44
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.44
qemu-system-x86 2.0.0+dfsg-2ubuntu1.44

After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3826-1
CVE-2018-10839, CVE-2018-11806, CVE-2018-12617, CVE-2018-16847,
CVE-2018-17958, CVE-2018-17962, CVE-2018-17963, CVE-2018-18849,
CVE-2018-18954, CVE-2018-19364

Package Information:
https://launchpad.net/ubuntu/+source/qemu/1:2.12+dfsg-3ubuntu8.1
https://launchpad.net/ubuntu/+source/qemu/1:2.11+dfsg-1ubuntu7.8
https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.33
https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.44

Original Source

Url : http://www.ubuntu.com/usn/USN-3826-1

CWE : Common Weakness Enumeration

% Id Name
38 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)
23 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
23 % CWE-125 Out-of-bounds Read
8 % CWE-416 Use After Free
8 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 182
Application 6
Application 1
Application 1
Os 5
Os 2
Os 1
Os 2
Os 1
Os 2
Os 3
Os 2
Os 2
Os 2
Os 2
Os 1
Os 4

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-74fb8b257b.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-87f2ace20d.nasl - Type : ACT_GATHER_INFO
2018-12-01 Name : The remote Debian host is missing a security update.
File : debian_DLA-1599.nasl - Type : ACT_GATHER_INFO
2018-11-13 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-4338.nasl - Type : ACT_GATHER_INFO
2018-09-27 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1313.nasl - Type : ACT_GATHER_INFO
2018-09-27 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1314.nasl - Type : ACT_GATHER_INFO
2018-09-19 Name : The remote Amazon Linux 2 host is missing a security update.
File : al2_ALAS-2018-1073.nasl - Type : ACT_GATHER_INFO
2018-09-07 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2018-1073.nasl - Type : ACT_GATHER_INFO
2018-08-21 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2018-2462.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2019-03-21 21:21:44
  • Multiple Updates
2018-12-14 00:21:12
  • Multiple Updates
2018-11-26 17:19:49
  • First insertion