Security Advisory - Chunked HTTP Packet L7-Parsing Vulnerability in Huawei Products
- SA No:huawei-sa-20160301-01-http
- Initial Release Date: Mar 01, 2016
- Last Release Date: Mar 01, 2016
There is a vulnerability in several Huawei products: AR series, NetEngine16EX and SRG series.
If the Layer 7 HTTP chunked packet paring function is enabled on these devices, an attacker could exploit the vulnerability to craft a special HTTP chunked packet and send it to the target device to cause it to restart, resulting in a DoS attack (Vulnerability ID: HWPSIRT-2015-09026).
Huawei has released software updates to fix these vulnerabilities. This advisory is available at the following link:
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20160301-01-http-en
|
Product Name |
Affected Version |
Resolved Product and Version |
|
AR120/AR1200/AR1200-S/AR120-S/AR150/AR150-S/AR160/AR160-S/AR200/AR200-S/AR2200/AR2200-S/AR3200/AR3200-S/AR3600/AR500/AR510 |
V200R003C01SPC300 |
Upgrade to V200R007C00SPC600 |
|
V200R003C01SPC900 |
||
|
V200R005C20SPC200 |
||
|
V200R005C20SPC500 |
||
|
V200R005C20SPC700 |
||
|
NetEngine16EX |
V200R003C01SPC300 |
Upgrade to V200R007C00SPC600 |
|
V200R003C01SPC900 |
||
|
V200R005C20SPC200 |
||
|
V200R005C20SPC500 |
||
|
V200R005C20SPC700 |
||
|
V200R006C10SPC300 |
||
|
SRG1300/SRG2300/SRG3300 |
V200R003C01SPC300 |
Upgrade to V200R007C00SPC600 |
|
V200R003C01SPC900 |
||
|
V200R005C20SPC200 |
||
|
V200R005C20SPC500 |
||
|
V200R005C20SPC700 |
||
|
V200R006C10SPC300 |
The attacker can exploit this vulnerability to launch a DoS attack on the equipment.
The vulnerability classification has been performed by using the CVSSv2 scoring system (http://www.first.org/cvss/).
Base Score: 7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Temporal Score: 6.4 (E:F/RL:O/RC:C)
Prerequisite:
- The attacker gains access to the network of the equipment;
- Layer 7 HTTP parsing rules are configured on the equipment;
1) SAC is enabled (disabled by default) and the identification signature database is loaded;
2) Application-based MQC is enabled on the interface, and Layer 7 HTTP parsing is enabled on the device.
Attacking procedure:
The attacker crafts and sends HTTP messages containing special chunked data to the target device on which Layer 7 HTTP parsing is enabled. Due to the vulnerability, the device does not verify the HTTP chunked data and restarts when parsing them.
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 discovered by Huawei internal tester.
2016-03-01 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.
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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