OpenComputers up to 1.8.2 server-side request forgery

Summaryinfo

A vulnerability identified as critical has been detected in OpenComputers up to 1.8.2. This impacts an unknown function. Performing a manipulation results in server-side request forgery. This vulnerability is cataloged as CVE-2023-37261. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in OpenComputers up to 1.8.2. This affects some unknown functionality. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

OpenComputers is a Minecraft mod that adds programmable computers and robots to the game. This issue affects every version of OpenComputers with the Internet Card feature enabled; that is, OpenComputers 1.2.0 until 1.8.3 in their most common, default configurations. If the OpenComputers mod is installed as part of a Minecraft server hosted on a popular cloud hosting provider, such as AWS, GCP and Azure, those metadata services' API endpoints are not forbidden (aka "blacklisted") by default. As such, any player can gain access to sensitive information exposed via those metadata servers, potentially allowing them to pivot or privilege escalate into the hosting provider. In addition, IPv6 addresses are not correctly filtered at all, allowing broader access into the local IPv6 network. This can allow a player on a server using an OpenComputers computer to access parts of the private IPv4 address space, as well as the whole IPv6 address space, in order to retrieve sensitive information. OpenComputers v1.8.3 for Minecraft 1.7.10 and 1.12.2 contains a patch for this issue. Some workarounds are also available. One may disable the Internet Card feature completely. If using OpenComputers 1.3.0 or above, using the allow list (`opencomputers.internet.whitelist` option) will prohibit connections to any IP addresses and/or domains not listed; or one may add entries to the block list (`opencomputers.internet.blacklist` option). More information about mitigations is available in the GitHub Security Advisory.

The weakness was shared 07/08/2023 as 2365. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-37261 since 06/29/2023. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.8.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch d13c015357fd6c42e0a1bdd6e1ef9462f0450a15 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• OpenComputers

Version

• 1.8.0
• 1.8.1
• 1.8.2

License

• open-source

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CPE 2.2info

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