Cacti 1.1.27 Client-IP Header remote_agent.php Request access control

Summaryinfo

A vulnerability marked as critical has been reported in Cacti 1.1.27. The affected element is an unknown function of the file remote_agent.php of the component Client-IP Header Handler. This manipulation as part of Request causes access control. This vulnerability is registered as CVE-2017-16660. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Cacti 1.1.27 (Log Management Software). Affected by this vulnerability is an unknown code of the file remote_agent.php of the component Client-IP Header Handler. The manipulation as part of a Request leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Cacti 1.1.27 allows remote authenticated administrators to conduct Remote Code Execution attacks by placing the Log Path under the web root, and then making a remote_agent.php request containing PHP code in a Client-ip header.

The bug was discovered 11/07/2017. The weakness was published 11/08/2017 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2017-16660 since 11/07/2017. The attack can be launched remotely. A single authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:remote_agent.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 104796 (Fedora 26 : cacti (2017-9762a831b2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170566 (OpenSUSE Security Update for cacti, cacti-spine (openSUSE-SU-2017:3051-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104796). Similar entries are available at VDB-109186, VDB-109226 and VDB-109287. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Log Management Software

Name

• Cacti

Version

• 1.1.27

License

• open-source

Website

• Product: https://github.com/Cacti/cacti/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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