Bitrix24 up to 22.0.300 MIME Type file.ajax.php?action=uploadfile unrestricted upload

Summaryinfo

A vulnerability described as critical has been identified in Bitrix24 up to 22.0.300. This affects an unknown function of the file /desktop_app/file.ajax.php?action=uploadfile of the component MIME Type Handler. Executing a manipulation can lead to unrestricted upload. This vulnerability is handled as CVE-2023-1720. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Bitrix24 up to 22.0.300. It has been declared as critical. This vulnerability affects an unknown code block of the file /desktop_app/file.ajax.php?action=uploadfile of the component MIME Type Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Lack of mime type response header in Bitrix24 22.0.300 allows authenticated remote attackers to execute arbitrary JavaScript code in the victim's browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via uploading a crafted HTML file through /desktop_app/file.ajax.php?action=uploadfile.

The weakness was released 11/01/2023. The advisory is available at starlabs.sg. This vulnerability was named CVE-2023-1720 since 03/30/2023. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/29/2023). This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Bitrix24

Version

• 22.0

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion