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Security Advisory - Memory Leak Vulnerability in Huawei Switches

  • SA No:Huawei-SA-20160113-03-Switch
  • Initial Release Date: 2016-01-13
  • Last Release Date: 2016-01-13

When serving as an HTTPS or SFTP server, the Huawei switch stores a user's SSL session information in the memory even after the user logs out. If the memory occupied by the SSL session information exceeds the allocated amount, memory leak occurs, causing the device to restart. (Vulnerability ID: HWPSIRT-2015-11035)

This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2015-8677.

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-20160113-03-switch-en

Product Name

Affected Version

Resolved Product and Version

S5300EI/ S5300SI/ S5310HI/ S6300EI

V200R003C00

V200R003SPH011

V200R005C00

V200R005SPH008

S2350EI/ S5300LI

V200R003C00

V200R003SPH011

V200R005C00

V200R005SPH008

V200R006C00

V200R006SPH002

S9300/ S7700/ S9700

V200R003C00

V200R003SPH011

V200R005C00

V200R005SPH009

V200R006C00

V200R006SPH003

S5720HI/ S5720EI

V200R006C00

V200R006SPH002

S2300/ S3300

V100R006C05

V100R006SPH022


An attacker can exploit this vulnerability to exhaust the allocated memory on the HTTPS or SFTP server, causing the device to restart.

The vulnerability classification has been performed by using the CVSSv2 scoring system (http://www.first.org/cvss/).

Base Score: 4.0 ( AV:N/AC:L/Au:S/C:N/I:N/A:P)

Temporal Score: 3.3 (E:F/RL:O/RC:C)

1. Prerequisites:

The attacker can log in to the HTTPS or SFTP server.

2. Attacking procedure:

The attacker logs in to and out of the HTTPS or SFTP server multiple times. If the memory occupied by the SSL session information exceeds the allocated memory size, memory leak occurs, leading to the reboot of the device.

None


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/index.htm

This vulnerability was reported by Huawei internal tester.

2016-01-13 V1.0 INITIAL

None


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. Please report to Huawei PSIRT at psirt@huawei.com if you find any security vulnerability of Huawei products.

This document is provided on an "AS IS" basis and does not imply any kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no event shall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by whatsoever means, will be totally at your own risk. Huawei is entitled to amend or update this document from time to time.