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securityvulnsSecurityvulnsSECURITYVULNS:DOC:32326
HistoryJul 14, 2015 - 12:00 a.m.

Merethis Centreon - Unauthenticated blind SQLi and Authenticated Remote Command Execution

2015-07-1400:00:00
vulners.com
13

Merethis Centreon - Unauthenticated blind SQLi and Authenticated Remote Command Execution

CVEs: CVE-2015-1560, CVE-2015-1561

Vendor: Merethis - www.centreon.com
Product: Centreon
Version affected: 2.5.4 and prior

Product description:
Centreon is the choice of some of the world's largest companies and mission-critical organizations for real-time IT performance monitoring and diagnostics management. (from https://www.centreon.com/en/)

Advisory introduction:
Centron 2.5.4 is susceptible to multiple vulnerabilities, including unauthenticated blind SQL injection and authenticated remote system command execution.

Credit: Huy-Ngoc DAU of Deloitte Conseil, France

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Finding 1: Unauthenticated Blind SQL injection in isUserAdmin function (CVE-2015-1560)

Vulnerable function is "isUserAdmin" (defined in include/common/common-Func.php), in which unsanitized "sid" GET parameter is used in a SQL request.

PoC:
https://example.domain/centreon/include/common/XmlTree/GetXmlTree.php?sid=%27%2Bif(1%3C2,sleep(1),%27%27)%2B%27
https://example.domain/centreon/include/common/XmlTree/GetXmlTree.php?sid=%27%2Bif(1%3C0,sleep(1),%27%27)%2B%27

By exploiting CVE-2015-1560, an attacker can obtain among others a valid session_id, which is required to exploit CVE-2015-1561.

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Finding 2: Authenticated Command Execution in getStats.php (CVE-2015-1561)

$command_line variable, which is passed to popen function, is constructed using unsanitized GET parameters.

PoC (a valid session_id value is required):

Combining two vulnerabilities, an unauthenticated attacker can take control of the web server.

================================
Timeline

26/01/2015 - Vulnerabilities discovered
29/01/2015 - Vendor notified
05/02/2015 - Vendor fixed SQLi
13/02/2015 - Vendor fixed RCE

References
Vendor fixes:

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