ZyXEL P-870H-51 1.00(AWG.3)D5 access control

Summaryinfo

A vulnerability has been found in ZyXEL P-870H-51 1.00(AWG.3)D5 and classified as problematic. Affected by this vulnerability is an unknown functionality. This manipulation causes access control. This vulnerability is handled as CVE-2018-1164. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in ZyXEL P-870H-51 1.00(AWG.3)D5 (Router Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect availability. The summary by CVE is:

This vulnerability allows remote attackers to cause a denial-of-service condition on vulnerable installations of ZyXEL P-870H-51 DSL Router 1.00(AWG.3)D5. Authentication is not required to exploit this vulnerability. The specific flaw exists within numerous exposed CGI endpoints. The vulnerability is caused by improper access controls that allow access to critical functions without authentication. An attacker can use this vulnerability to reboot affected devices, along with other actions. Was ZDI-CAN-4540.

The bug was discovered 01/23/2018. The weakness was released 02/21/2018 (Website). The advisory is shared at zerodayinitiative.com. This vulnerability is known as CVE-2018-1164 since 12/05/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/07/2020). MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• ZyXEL

Name

• P-870H-51

Version

• 1.00(AWG.3)D5

License

• commercial

Website

• Vendor: https://www.zyxel.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion