Kentico CMS 8.x/9.x/10.x/11.0 SilentInstall XML Document SqlName/SqlPswd/Database/UserName/Password memory corruption ⚔ [Disputed]

Summaryinfo

A vulnerability, which was classified as critical, was found in Kentico CMS 8.x/9.x/10.x/11.0. Affected is an unknown function of the component SilentInstall XML Document Handler. Executing a manipulation of the argument SqlName/SqlPswd/Database/UserName/Password as part of XML Document can lead to memory corruption. The identification of this vulnerability is CVE-2018-5282. The attack can only be executed locally. Furthermore, there is an exploit available. The existence of this vulnerability is still disputed at present.

Detailsinfo

A vulnerability classified as critical was found in Kentico CMS 8.x/9.x/10.x/11.0 (Content Management System). This vulnerability affects some unknown functionality of the component SilentInstall XML Document Handler. The manipulation of the argument SqlName/SqlPswd/Database/UserName/Password as part of a XML Document leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Kentico 9.0 through 11.0 has a stack-based buffer overflow via the SqlName, SqlPswd, Database, UserName, or Password field in a SilentInstall XML document. NOTE: the vendor disputes this issue because neither a buffer overflow nor a crash can be reproduced; also, reading XML documents is implemented exclusively with managed code within the Microsoft .NET Framework

The bug was discovered 01/08/2018. The weakness was shared 01/08/2018 (Website). The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2018-5282 since 01/08/2018. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The real existence of this vulnerability is still doubted at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (43547). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Kentico

Name

• CMS

Version

• 8.x
• 9.x
• 10.x
• 11.0

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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