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.

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DEBIAN-CVE-2019-16905

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...

PT-2019-5839

Name of the Vulnerable Software and Affected Versions OpenSSH versions 7.7 through 7.9 OpenSSH versions 8.x before 8.1 Description The issue is caused by an integer overflow in the XMSS key parsing algorithm, leading to memory corruption and local code execution. This occurs when OpenSSH is...