OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.
|https://www.openwall.com/lists/oss-security/2019/10/09/1||Mailing List Third Party Advisory|
|https://bugzilla.suse.com/show_bug.cgi?id=1153537||Issue Tracking Third Party Advisory|
|https://0day.life/exploits/0day-1009.html||Exploit Third Party Advisory|
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