Toshiba Home Gateway HEM-GW16A/Home Gateway HEM-GW26A up to 1.2.9 Developer Screen access control

Summaryinfo

A vulnerability identified as critical has been detected in Toshiba Home Gateway HEM-GW16A and Home Gateway HEM-GW26A up to 1.2.9. This impacts an unknown function of the component Developer Screen. Performing a manipulation results in access control. This vulnerability is reported as CVE-2018-16198. The attacker must have access to the local network to execute the attack. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Toshiba Home Gateway HEM-GW16A and Home Gateway HEM-GW26A up to 1.2.9. This affects some unknown functionality of the component Developer Screen. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Toshiba Home gateway HEM-GW16A 1.2.9 and earlier, Toshiba Home gateway HEM-GW26A 1.2.9 and earlier may allow an attacker on the same network segment to access a non-documented developer screen to perform operations on the affected device.

The bug was discovered 12/19/2018. The weakness was disclosed 01/09/2019 (Website). It is possible to read the advisory at jvn.jp. This vulnerability is uniquely identified as CVE-2018-16198 since 08/30/2018. The attack can only be initiated within the local network. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/27/2020). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 21 days. During that time the estimated underground price was around $5k-$25k.

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

The entries VDB-128906, VDB-128908, VDB-128909 and VDB-128910 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Toshiba

Name

• Home Gateway HEM-GW16A
• Home Gateway HEM-GW26A

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7
• 1.2.8
• 1.2.9

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion