SB2018012324 - Multiple vulnerabilities in Enterprise Manager

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Format string error (CVE-ID: CVE-2017-17407)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of NetGain Systems Enterprise Manager v7.2.699 build 1001. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the content parameter provided to the script_test.jsp endpoint. A crafted content request parameter can trigger execution of a system call composed from a user-supplied string. An attacker can leverage this vulnerability to execute code under the context of the web service. Was ZDI-CAN-5080.

2) Improper Authentication (CVE-ID: CVE-2017-16590)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

This vulnerability allows remote attackers to bypass authentication on vulnerable installations of NetGain Systems Enterprise Manager 7.2.699 build 1001. User interaction is required to exploit this vulnerability. The specific flaw exists within the MainFilter servlet. The issue results from the lack of proper string matching inside the doFilter method. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of Administrator. Was ZDI-CAN-5099.

3) Information disclosure (CVE-ID: CVE-2017-16591)

The vulnerability allows a remote authenticated user to gain access to sensitive information.

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of NetGain Systems Enterprise Manager 7.2.699 build 1001. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the org.apache.jsp.u.jsp.restore.download_005fdo_jsp servlet, which listens on TCP port 8081 by default. When parsing the filename parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of Administrator. Was ZDI-CAN-5100.

Remediation

Install update from vendor's website.

References

• https://zerodayinitiative.com/advisories/ZDI-17-954
• https://zerodayinitiative.com/advisories/ZDI-17-955
• https://zerodayinitiative.com/advisories/ZDI-17-956