Emby Server up to 4.7.11/4.8.30 request smuggling

Summaryinfo

A vulnerability marked as critical has been reported in Emby Server up to 4.7.11/4.8.30. Affected is an unknown function. This manipulation causes request smuggling. This vulnerability is registered as CVE-2023-33193. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component. It looks like this entry got a duplicate CVE-2021-25827 assigned.

Detailsinfo

A vulnerability classified as critical was found in Emby Server up to 4.7.11/4.8.30. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a request smuggling vulnerability. The CWE definition for the vulnerability is CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Emby Server is a user-installable home media server which stores and organizes a user's media files of virtually any format and makes them available for viewing at home and abroad on a broad range of client devices. This vulnerability may allow administrative access to an Emby Server system, depending on certain user account settings. By spoofing certain headers which are intended for interoperation with reverse proxy servers, it may be possible to affect the local/non-local network determination to allow logging in without password or to view a list of user accounts which may have no password configured. Impacted are all Emby Server system which are publicly accessible and where the administrator hasn't tightened the account login configuration for administrative users. This issue has been patched in Emby Server Beta version 4.8.31 and Emby Server version 4.7.12.

The weakness was published 05/30/2023 as GHSA-fffj-6fr6-3fgf. The advisory is shared at github.com. This vulnerability is known as CVE-2023-33193 since 05/17/2023. Neither technical details nor an exploit are publicly available.

Upgrading to version 4.7.12 or 4.8.31 eliminates this vulnerability.

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

Productinfo

Name

• Emby Server

Version

• 4.7.0
• 4.7.1
• 4.7.2
• 4.7.3
• 4.7.4
• 4.7.5
• 4.7.6
• 4.7.7
• 4.7.8
• 4.7.9
• 4.7.10
• 4.7.11
• 4.8.0
• 4.8.1
• 4.8.2
• 4.8.3
• 4.8.4
• 4.8.5
• 4.8.6
• 4.8.7
• 4.8.8
• 4.8.9
• 4.8.10
• 4.8.11
• 4.8.12
• 4.8.13
• 4.8.14
• 4.8.15
• 4.8.16
• 4.8.17
• 4.8.18
• 4.8.19
• 4.8.20
• 4.8.21
• 4.8.22
• 4.8.23
• 4.8.24
• 4.8.25
• 4.8.26
• 4.8.27
• 4.8.28
• 4.8.29
• 4.8.30

CPE 2.3info

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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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