UCOPIA Wireless Appliance up to 4.4.19/5.0.18/5.1.10 /bin/sh Password improper authentication

Summaryinfo

A vulnerability marked as critical has been reported in UCOPIA Wireless Appliance up to 4.4.19/5.0.18/5.1.10. Affected by this vulnerability is an unknown functionality of the file /bin/sh. This manipulation of the argument Password with the input bhu85tgb causes improper authentication. This vulnerability is registered as CVE-2017-17743. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in UCOPIA Wireless Appliance up to 4.4.19/5.0.18/5.1.10. Affected by this vulnerability is an unknown code of the file /bin/sh. The manipulation of the argument password with the input value bhu85tgb leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Improper input sanitization within the restricted administration shell on UCOPIA Wireless Appliance devices before 4.4.20, 5.0.x before 5.0.19, and 5.1.x before 5.1.11 allows authenticated remote attackers to escape the shell and escalate their privileges by uploading a .bashrc file containing the /bin/sh string. In some situations, authentication can be achieved via the bhu85tgb default password for the admin account.

The bug was discovered 03/19/2018. The weakness was published 03/22/2018 (Website). It is possible to read the advisory at securite.intrinsec.com. This vulnerability is known as CVE-2017-17743 since 12/18/2017. The exploitation appears to be easy. The attack can be launched remotely. A single authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 4.4.20, 5.0.19 or 5.1.11 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• UCOPIA

Name

• Wireless Appliance

Version

• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.4.4
• 4.4.5
• 4.4.6
• 4.4.7
• 4.4.8
• 4.4.9
• 4.4.10
• 4.4.11
• 4.4.12
• 4.4.13
• 4.4.14
• 4.4.15
• 4.4.16
• 4.4.17
• 4.4.18
• 4.4.19
• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.0.11
• 5.0.12
• 5.0.13
• 5.0.14
• 5.0.15
• 5.0.16
• 5.0.17
• 5.0.18
• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3
• 5.1.4
• 5.1.5
• 5.1.6
• 5.1.7
• 5.1.8
• 5.1.9
• 5.1.10

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion