moonlight-stream moonlight-common-c GameStream Client buffer overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in moonlight-stream moonlight-common-c. This affects an unknown part of the component GameStream Client. Such manipulation leads to buffer overflow. This vulnerability is documented as CVE-2023-42801. The attack can be executed remotely. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in moonlight-stream moonlight-common-c (affected version not known). Affected by this issue is some unknown functionality of the component GameStream Client. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Moonlight-common-c contains the core GameStream client code shared between Moonlight clients. Moonlight-common-c is vulnerable to buffer overflow starting in commit f57bd745b4cbed577ea654fad4701bea4d38b44c. A malicious game streaming server could exploit a buffer overflow vulnerability to crash a moonlight client. Achieving RCE is possible but unlikely, due to stack canaries in use by modern compiler toolchains. The published binaries for official clients Qt, Android, iOS/tvOS, and Embedded are built with stack canaries, but some unofficial clients may not use stack canaries. This vulnerability takes place after the pairing process, so it requires the client to be tricked into pairing to a malicious host. It is not possible to perform using a man-in-the-middle due to public key pinning that takes place during the pairing process. The bug was addressed in commit b2497a3918a6d79808d9fd0c04734786e70d5954.

The weakness was released 12/14/2023 as GHSA-f3h8-j898-5h5v. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-42801 since 09/14/2023. There are neither technical details nor an exploit publicly available.

Applying the patch b2497a3918a6d79808d9fd0c04734786e70d5954 is able to eliminate this problem. The bugfix is ready for download at github.com.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• moonlight-stream

Name

• moonlight-common-c

License

• open-source

Website

• Product: https://github.com/moonlight-stream/moonlight-common-c/

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