Multiple vulnerabilities in IXP EasyInstall

1) Cleartext transmission of sensitive information

EUVDB-ID: #VU24774

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-2019-19898

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information to the IXP server instance during login. A remote attacker with ability to intercept network traffic can gain access to sensitive data.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EasyInstall: 6.2.13723

External links

http://improsec.com/tech-blog/multiple-vulnerabilities-in-easyinstall-rmm-and-deployment-software

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.

2) Input validation error

EUVDB-ID: #VU24773

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19894

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to temporarily disable UAC.

The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker can disable UAC for other users by renaming and replacing "%SYSTEMDRIVE%IXPDATAIXPAS.IXP".

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EasyInstall: 6.2.13723

External links

http://improsec.com/tech-blog/multiple-vulnerabilities-in-easyinstall-rmm-and-deployment-software

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Path traversal

EUVDB-ID: #VU24772

Risk: Medium

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-2019-19893

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences on TCP port 8000 via the Engine Service. A remote attacker, who can access the server's filesystem with the access rights of "NT AUTHORITYSYSTEM", can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

EasyInstall: 6.2.13723

External links

http://improsec.com/tech-blog/multiple-vulnerabilities-in-easyinstall-rmm-and-deployment-software

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.

4) Incorrect default permissions

EUVDB-ID: #VU24771

Risk: High

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

CVE-ID: CVE-2019-19896

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

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

The vulnerability exists due to weak permissions on the Engine Service share. The default file permissions of the IXP$ share on the server allows modification of directories and files (e.g., bat-scripts), which allows remote authenticated attacker to execute arbitrary code in the context of "NT AUTHORITYSYSTEM" on the target server and clients.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EasyInstall: 6.2.13723

External links

http://improsec.com/tech-blog/multiple-vulnerabilities-in-easyinstall-rmm-and-deployment-software

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

5) Code Injection

EUVDB-ID: #VU24770

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19897

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation in the Agent Service. A remote attacker can communicate with the Agent Service over TCP port 20051 and execute arbitrary code in the "NT AUTHORITYSYSTEM" context of the target system by using the Execute Command Line function.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EasyInstall: 6.2.13723

External links

http://improsec.com/tech-blog/multiple-vulnerabilities-in-easyinstall-rmm-and-deployment-software

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.

6) Input validation error

EUVDB-ID: #VU24769

Risk: High

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

CVE-ID: CVE-2019-19895

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to the Lateral Movement (using the Agent Service) against other users on a client system. A remote authenticated attacker can modify "%SYSTEMDRIVE%IXPSW[PACKAGE_CODE]EveryLogon.bat" to achieve this movement and execute code in the context of other users.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EasyInstall: 6.2.13723

External links

http://improsec.com/tech-blog/multiple-vulnerabilities-in-easyinstall-rmm-and-deployment-software

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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