A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
https://www.libssh2.org/CVE-2019-3863.html
https://www.debian.org/security/2019/dsa-4431
https://security.netapp.com/advisory/ntap-20190327-0005/
https://seclists.org/bugtraq/2019/Apr/25
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3863
https://access.redhat.com/errata/RHSA-2019:2399
https://access.redhat.com/errata/RHSA-2019:1943
https://access.redhat.com/errata/RHSA-2019:1791
https://access.redhat.com/errata/RHSA-2019:1652
https://access.redhat.com/errata/RHSA-2019:1175
https://access.redhat.com/errata/RHSA-2019:0679
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html