Microsoft Exchange Server URI Validator DownloadDataFromUri information disclosure

Summaryinfo

A vulnerability described as problematic has been identified in Microsoft Exchange Server. Impacted is the function DownloadDataFromUri of the component URI Validator. Such manipulation leads to information disclosure. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Microsoft Exchange Server (Groupware Software) (unknown version) and classified as problematic. Affected by this issue is the function DownloadDataFromUri of the component URI Validator. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The weakness was shared 11/07/2023 as ZDI-23-1579. The advisory is available at zerodayinitiative.com. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 11/07/2023). This vulnerability is assigned to T1592 by the MITRE ATT&CK project. A Microsoft spokesperson responded to BleepingComputer's request for a comment with the statement, that they've reviewed these reports and have found that they have either already been addressed, or do not meet the bar for immediate servicing under the severity classification guidelines and they will evaluate addressing them in future product versions and updates as appropriate.

Microsoft claims that the technique described requires an attacker to have prior access to email credentials.

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

bleepingcomputer.com is providing further details. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Groupware Software

Vendor

• Microsoft

Name

• Exchange Server

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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