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Security Advisory - Information Disclosure Vulnerability about SWAPGS Instruction

  • SA No:huawei-sa-20200408-01-swapgs
  • Initial Release Date: Apr 08, 2020
  • Last Release Date: Jul 29, 2020

An information disclosure vulnerability exists when certain x86-64-bit central processing units (CPU) speculatively access memory, this vulnerability uses the SWAPGS instruction in the CPU. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.  An attacker who successfully exploited the vulnerability could obtain specific information. (Vulnerability ID: HWPSIRT-2019-08103) 

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-1125. 
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-20200408-01-swapgs-en

Product Name

Affected Version

Resolved Product and Version

OceanStor 9000

V300R006C00SPC001

OceanStor 9000 V5 7.1.1

V300R006C10

iManager NetEco

V600R009C00

iManager NetEco 6000 V600R008C10SPC570

V600R009C10SPC200

iManager NetEco 6000

V600R008C10SPC300

V600R008C10SPC580

V600R008C20



An attacker who successfully exploited the vulnerability could obtain specific information.


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

Base Score: 5.6 (AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N)

Temporal Score: 5.2(E:F/RL:O/RC:C)

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

The attacker need to log on to the affected system and run a specially crafted application.

Vulnerability details:

This vulnerability uses the SWAPGS instruction in the CPU. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.  An attacker who successfully exploited the vulnerability could obtain specific information.


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 publicly disclosed.


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

2020-06-24 V1.1 UPDATED Updated the "Software Versions and Fixes" section;

2020-04-08 V1.0 INITIAL

Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

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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