Huawei S5300/S5700/S6300/S6700/S7700/S9300/S9700/S12700 MPLS Packet input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Huawei S5300, S5700, S6300, S6700, S7700, S9300, S9700 and S12700 and classified as problematic. Affected is an unknown function of the component MPLS Packet Handler. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2016-8773. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Huawei S5300, S5700, S6300, S6700, S7700, S9300, S9700 and S12700. This vulnerability affects an unknown code of the component MPLS Packet Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

Huawei S5300 with software V200R003C00, V200R007C00, V200R008C00, V200R009C00; S5700 with software V200R001C00, V200R002C00, V200R003C00, V200R005C00, V200R005C03, V200R007C00, V200R008C00, V200R009C00; S6300 with software V200R003C00, V200R005C00, V200R008C00, V200R009C00; S6700 with software V200R001C00, V200R001C01, V200R002C00, V200R003C00, V200R005C00, V200R008C00, V200R009C00; S7700 with software V200R007C00, V200R008C00, V200R009C00; S9300 with software V200R007C00, V200R008C00, V200R009C00; S9700 with software V200R007C00, V200R008C00, V200R009C00; and S12700 with software V200R007C00, V200R007C01, V200R008C00, V200R009C00 allow the attacker to cause a denial of service condition by sending malformed MPLS packets.

The bug was discovered 11/11/2016. The weakness was presented 04/02/2017 (Website). The advisory is shared for download at huawei.com. This vulnerability was named CVE-2016-8773 since 10/18/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 142 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 94285†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Huawei

Name

• S5300
• S5700
• S6300
• S6700
• S7700
• S9300
• S9700
• S12700

License

• commercial

Website

• Vendor: https://www.huawei.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/18/2016 🔍
11/11/2016 +24 days 🔍
11/11/2016 +0 days 🔍
04/02/2017 +142 days 🔍
04/02/2017 +0 days 🔍
04/03/2017 +1 days 🔍
11/24/2022 +2061 days 🔍

Sourcesinfo

Vendor: huawei.com

Advisory: sa-20161111-01
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8773 (🔍)
GCVE (CVE): GCVE-0-2016-8773
GCVE (VulDB): GCVE-100-99208
SecurityFocus: 94285 - Multiple Huawei Products CVE-2016-8773 Denial of Service Vulnerability
OSVDB: - CVE-2016-8773 - Huawei - Multiple Products - Denial of Service Issue

Entryinfo

Created: 04/03/2017 09:04
Updated: 11/24/2022 14:37
Changes: 04/03/2017 09:04 (63), 11/24/2022 14:37 (4)
Complete: 🔍
Cache ID: 216::103

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Discussion

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