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Security Advisory - Denial of Service Vulnerability in OpenSSL

  • SA No:huawei-sa-20200715-01-openssl
  • Initial Release Date: Jul 15, 2020
  • Last Release Date: Jul 29, 2020

There is a Denial of Service (DoS) vulnerability in Openssl. Specific function in Openssl may crash during or after the TLS 1.3 handshake due to a NULL pointer dereference. Attacker may send crafted request packet to the target host service to exploit this vulnerability. Successful exploit may cause the affected service crash or deny of service. (Vulnerability ID: HWPSIRT-2020-16617)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-1967.

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-20200715-01-openssl-en


Product Name

Affected Version

Resolved Product and Version

FusionCube

3.2.1.SPC201

3.2.1.SPC300

6.0.0

6.0.2

6.0.RC3

6.0.1

Myna

9.0.1.10(H100SP12C00)

9.0.1.11(H100SP9C00)

eLog

V200R007C10SPC102

V200R007C10SPC200



Successful exploit may cause the affected service crash or deny of service.


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

Base Score: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Temporal Score: 7.0 (E:F/RL:O/RC:C)


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

The attacker may gain access the affected network.

Vulnerability details:

Specific function in Openssl may crash during or after the TLS 1.3 handshake due to a NULL pointer dereference. Attacker may send crafted request packet to the target host service to exploit this vulnerability. Successful exploit may crash or deny of service.


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 V1.1 UPDATED Updated the "Software Versions and Fixes" section;

2020-07-15 V1.0 INITIAL



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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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