Secunia Logo  
 
eScan Products Agent Service Missing User Authentication
Secunia Advisory: SA23809
Release Date: 2007-05-02
Last Update: 2007-05-21
Popularity: 4,881 views

Critical:
Less critical
Impact: Security Bypass
Where: From local network
Solution Status: Unpatched

Software:eScan 8.x
eScan for Vista 9.x

Subscribe: Instant alerts on relevant vulnerabilities

CVE reference:CVE-2007-0655


Description:
Secunia Research has discovered a security issue in various eScan products, which can be exploited by malicious, local users to gain escalated privileges or by malicious people to manipulate certain settings or gain knowledge of sensitive information.

The MicroWorld Agent service (MWAGENT.EXE) runs with SYSTEM privileges and accepts connections from anywhere without implementing an authentication scheme. This allows anyone to send arbitrary commands to the service (default port 2222/tcp) allowing the following:

1) An unprivileged, local user can gain SYSTEM privileges by sending a SCASYS, SCADRV, or SCAMEM command, which invokes the Anti-Virus scanner in a window with SYSTEM privileges. Through this, it is possible to execute any command with the privileges of the scanner via e.g. the "View Log" functionality.

2) It is possible to disable/enable the eScan Anti-Virus Monitor process via the DISMON and ENAMON commands.

3) An unprivileged, local user can uninstall the product via the UNISOFT command and clicking "Yes" on a window that pops up on the user's desktop.

4) It is possible to disclose the contents of arbitrary files on the system via the SEND command.

5) It is possible to enable/disable the "Restrictive Scanning" configuration setting via the SLOMOD ("High Security (Slow Mode)") and FASMOD ("Medium Security (Fast Mode)") commands.

6) It is possible to enable/disable the eScan "File Rights" configuration setting via the ENFRIG and DIFRIG commands.

7) It is possible to change the server status via the STASER and STOSER commands.

8) It is possible to configure the update server via the UPDSET command.

The security issue is confirmed in versions 8.0.671.1, 9.0.714.1, 9.0.715.1, and 9.0.718.1. Other versions may also be affected.

Solution:
A stable version should be available shortly.

NOTE: The previously released versions (9.0.714.1, 9.0.715.1, and 9.0.718.1) supposedly fixing the security issue are still affected. Version 9.0.715.1 has implemented a command obfuscation scheme and therefore requires specially obfuscated commands sent to the service. Version 9.0.718.1 has implemented a weak authentication scheme, which needs to be brute forced.

Provided and/or discovered by:
Carsten Eiram, Secunia Research.

Changelog:
2007-05-02: Added version 9.x as affected. Updated "Solution" section.
2007-05-10: Added information about version 9.0.715.1 being affected.
2007-05-21: Added information about version 9.0.718.1 being affected.

Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2007-45/


Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.

Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
  
Latest Advisories

Today
New advisories: 6
New vulnerabilities: 18
Updated advisories: 9

Less // 149 views
Red Hat update for kernel
Less // 140 views
Ubuntu update for bind9
Less // 130 views
Ubuntu update for ntp
Less // 137 views
Red Hat update for bind

8th Jan, 2009
New advisories: 24
New vulnerabilities: 99
Updated advisories: 26


Solutions | More...  


Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.

Most Popular - 3 Hours

1. Red Hat update for kernel // 106 views
2. Ubuntu update for bind9 // 99 views
3. Red Hat update for bind // 99 views
4. Ubuntu update for ntp // 89 views
5. XOOPS "mydirname" PHP Code Injection Vulnerability // 60 views
6. CuteNews Cross-Site Scripting and PHP Code Execution Vulnerabilities // 45 views
7. SAP GUI TabOne ActiveX Control Caption List Buffer Overflow // 42 views
8. ISC BIND "EVP_VerifyFinal()" and "DSA_do_verify()" Spoofing Vulnerability // 36 views
9. OpenSSL DSA / ECDSA "EVP_VerifyFinal()" Spoofing Vulnerability // 34 views
10. Soholaunch Pro "_SESSION[docroot_path]" File Inclusion // 30 views