Selesta Visual Access Manager up to 4.29 XML File /common/vam_editXml.php out-of-bounds write

Summaryinfo

A vulnerability was found in Selesta Visual Access Manager up to 4.29 and classified as critical. This affects an unknown function of the file /common/vam_editXml.php of the component XML File Handler. Executing a manipulation can lead to out-of-bounds write. This vulnerability is tracked as CVE-2019-19988. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Selesta Visual Access Manager up to 4.29 (Access Management Software). It has been declared as critical. This vulnerability affects an unknown code of the file /common/vam_editXml.php of the component XML File Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Selesta Visual Access Manager (VAM) 4.15.0 through 4.29. A user with valid credentials is able to create and write XML files on the filesystem via /common/vam_editXml.php in the web interface. The vulnerable PHP page checks none of these: the parameter that identifies the file name to be created, the destination path, or the extension. Thus, an attacker can manipulate the file name to create any type of file within the filesystem with arbitrary content.

The weakness was disclosed 02/26/2020. This vulnerability was named CVE-2019-19988 since 12/26/2019. The attack can be initiated remotely. A single authentication is needed for exploitation. There are known technical details, but no exploit is available.

By approaching the search of inurl:common/vam_editXml.php it is possible to find vulnerable targets with Google Hacking.

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

The entries VDB-150536, VDB-150535, VDB-150534 and VDB-150533 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Access Management Software

Vendor

• Selesta

Name

• Visual Access Manager

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19
• 4.20
• 4.21
• 4.22
• 4.23
• 4.24
• 4.25
• 4.26
• 4.27
• 4.28
• 4.29

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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