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Security Advisory - Buffer Overflow Vulnerability in QEMU-KVM

  • SA No:huawei-sa-20200115-01-qemu
  • Initial Release Date: 2020.01.15
  • Last Release Date: 2020.08.19

There is a buffer overflow vulnerability in the vhost module of QEMU-KVM. During the hot migration of the target VM, an attacker with guest user account may send descriptors with invalid length to the affected host to exploit this vulnerability. Successfully exploited may cause the kernel buffer overflow and triggered to VM escape. (Vulnerability ID: HWPSIRT-2019-09112)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-14835.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-qemu-en


Product Name

Affected Version

Resolved Product and Version

ManageOne

6.5.0

6.5.1.SPC203

6.5.0.SPC100.B210

6.5.1RC1.B060

6.5.1RC1.B080

6.5.RC2.B050

iManager NetEco

V600R009C00

iManager NetEco 6000 V600R008C10SPC570

V600R009C10SPC200

iManager NetEco 6000

V600R008C10SPC300

V600R008C10SPC580

V600R008C20



Successfully exploited may cause the kernel buffer overflow and triggered to VM escape.


The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).

Base Score: 7.2 (AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H) 

Temporal Score: 6.7 (E:F/RL:O/RC:C)

This vulnerability can be exploited only when the following conditions are present:

Opened the hot migration on the target VM.

Vulnerability details:

During the hot migration of the target VM, an attacker with guest user account may send descriptors with invalid length to the affected host to exploit this vulnerability. Successfully exploited may cause the kernel buffer overflow and triggered to VM escape.


Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.

This vulnerability was disclosed by the Linux kernel community.

2020-08-19 V1.3 UPDATED Updated the "Software Versions and Fixes" section;

2020-07-29 V1.2 UPDATED Updated the "Software Versions and Fixes" section;

2020-07-15 V1.1 UPDATED Updated the "Software Versions and Fixes" section;

2020-01-15 V1.0 INITIAL




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To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

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