CVE-2023-37261
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.79% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- opencomputers/opencomputers
- Source
- security-advisories@github.com
References
- https://github.com/MightyPirates/OpenComputers/blob/5b2ba76a4c242b369b9b6ac6196fd04d96580ad0/src/main/resources/application.conf#L966-L986Product
- https://github.com/MightyPirates/OpenComputers/blob/5b2ba76a4c242b369b9b6ac6196fd04d96580ad0/src/main/scala/li/cil/oc/Settings.scala#L614-L637Product
- https://github.com/MightyPirates/OpenComputers/commit/d13c015357fd6c42e0a1bdd6e1ef9462f0450a15Patch
- https://github.com/MightyPirates/OpenComputers/issues/2365Issue Tracking
- https://github.com/MightyPirates/OpenComputers/releases/tag/1.12.2-forge%2F1.8.3Release Notes
- https://github.com/MightyPirates/OpenComputers/security/advisories/GHSA-vvfj-xh7c-j2cmVendor Advisory
- https://github.com/cc-tweaked/CC-Tweaked/security/advisories/GHSA-7p4w-mv69-2wm2Not Applicable
- https://github.com/MightyPirates/OpenComputers/blob/5b2ba76a4c242b369b9b6ac6196fd04d96580ad0/src/main/resources/application.conf#L966-L986Product
- https://github.com/MightyPirates/OpenComputers/blob/5b2ba76a4c242b369b9b6ac6196fd04d96580ad0/src/main/scala/li/cil/oc/Settings.scala#L614-L637Product
- https://github.com/MightyPirates/OpenComputers/commit/d13c015357fd6c42e0a1bdd6e1ef9462f0450a15Patch
- https://github.com/MightyPirates/OpenComputers/issues/2365Issue Tracking
- https://github.com/MightyPirates/OpenComputers/releases/tag/1.12.2-forge%2F1.8.3Release Notes
- https://github.com/MightyPirates/OpenComputers/security/advisories/GHSA-vvfj-xh7c-j2cmVendor Advisory
- https://github.com/cc-tweaked/CC-Tweaked/security/advisories/GHSA-7p4w-mv69-2wm2Not Applicable
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.