CVE-2023-42801
CVSS 3.1 Score 7.6 of 10 (high)
Details
Summary
CVE-2023-42801 is a buffer overflow vulnerability affecting Moonlight-common-c, the core GameStream client code shared between various Moonlight clients. The issue was introduced in commit f57bd745b4cbed577ea654fad4701bea4d38b44c. Malicious game streaming servers could exploit this vulnerability to crash a moonlight client, potentially achieving remote code execution, although this is unlikely due to stack canaries used by modern compiler toolchains. The official clients for Qt, Android, iOS/tvOS, and Embedded include stack canaries, but unofficial clients may not. This vulnerability is exploited after the pairing process, requiring the client to be tricked into pairing with a malicious host. Exploitation through man-in-the-middle attacks is not possible due to public key pinning during the pairing process. The vulnerability was addressed in commit b2497a3918a6d79808d9fd0c04734786e70d5954.
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