Multiple vulnerabilities in TeamViewer bundled with Omron CX-Supervisor



Published: 2019-11-07
Risk High
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2010-3128
CVE-2018-14333
CVE-2019-11769
CVE-2018-16550
CWE-ID CWE-426
CWE-200
CWE-522
CWE-799
CWE-477
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #3 is available.
Vulnerable software
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CX-Supervisor
Server applications / Frameworks for developing and running applications

Vendor Omron

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Untrusted search path

EUVDB-ID: #VU22570

Risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2010-3128

CWE-ID: CWE-426 - Untrusted Search Path

Exploit availability: Yes

Description

The vulnerability allows a local attacker to execute arbitrary code on the target system.

The vulnerability exists due to executed malicious .dll file passed via untrusted search path. A local attacker, and possibly remote attacker can execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse dwmapi.dll that is located in the same folder as a .tvs or .tvc file.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CX-Supervisor: 3.2.0 - 3.5.0

External links

http://ics-cert.us-cert.gov/advisories/icsa-19-309-01


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Information disclosure

EUVDB-ID: #VU14011

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14333

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to storing of a password in Unicode format within TeamViewer.exe process memory between "[00 88] and "[00 00 00]" delimiters. A remote attacker can leverage an unattended workstation on which TeamViewer has disconnected but remains running and access arbitrary data.

Mitigation

Install update from vendor's website.

Vulnerable software versions

CX-Supervisor: 3.2.0 - 3.5.0

External links

http://ics-cert.us-cert.gov/advisories/icsa-19-309-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Insufficiently protected credentials

EUVDB-ID: #VU22560

Risk: Low

CVSSv3.1: 7.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-11769

CWE-ID: CWE-522 - Insufficiently Protected Credentials

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain the administrator credentials.

The vulnerability exist due to the admin credentials in memory are stored in clear text. A local authenticated user can inject code into "Teamviewer.exe" which intercepts calls to GetWindowTextW and logs the processed credentials.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

CX-Supervisor: 3.2.0 - 3.5.0

External links

http://ics-cert.us-cert.gov/advisories/icsa-19-309-01


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

4) Improper control of interaction frequency

EUVDB-ID: #VU22562

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-16550

CWE-ID: CWE-799 - Improper Control of Interaction Frequency

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a brute-force attack on the target system.

The vulnerability exists due to the application does not implement sufficient measures to prevent multiple failed authentication attempts. A remote attacker can bypass the brute-force authentication protection mechanism by skipping the "Cancel" step, which makes it easier to determine the correct value of the default 4-digit PIN.


Mitigation

 Note: This vulnerability affects TeamViewer versions 10.x through 13.x. Install updates from vendor's website.

Vulnerable software versions

CX-Supervisor: 3.2.0 - 3.5.0

External links

http://ics-cert.us-cert.gov/advisories/icsa-19-309-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Use of Obsolete Function

EUVDB-ID: #VU22571

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-477 - Use of Obsolete Function

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the code uses deprecated or obsolete functions, which suggests that the code has not been actively reviewed or maintained. A remote attacker can execute arbitrary code on the target system.

Successful exploitation of this vulnerability could result in information disclosure, total compromise of the system, and system unavailability.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

CX-Supervisor: 3.2.0 - 3.5.0

External links

http://ics-cert.us-cert.gov/advisories/icsa-19-309-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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