A flaw was found in Samba. Some SMB1 write requests were not correctly range-checked to ensure the client had sent enough data to fulfill the write, allowing server memory contents to be written into the file (or printer) instead of client-supplied data. The client cannot control the area of the server memory written to the file (or printer).
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "ctdb" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "ctdb-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libnss-winbind" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libnss-winbind-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libpam-winbind" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libpam-winbind-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libsmbclient" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libsmbclient-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libsmbclient-dev" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libwbclient-dev" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libwbclient0" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "libwbclient0-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "python3-samba" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "python3-samba-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "registry-tools" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "registry-tools-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-common" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-common-bin" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-common-bin-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-dev" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-dsdb-modules" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-dsdb-modules-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-libs" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-libs-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-testsuite" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-testsuite-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-vfs-modules" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "samba-vfs-modules-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "smbclient" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "smbclient-dbgsym" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "winbind" }, { "binary_version": "2:4.13.17~dfsg-0ubuntu1.20.04.1", "binary_name": "winbind-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "ctdb" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "ctdb-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libnss-winbind" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libnss-winbind-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libpam-winbind" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libpam-winbind-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libsmbclient" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libsmbclient-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libsmbclient-dev" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libwbclient-dev" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libwbclient0" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "libwbclient0-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "python3-samba" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "python3-samba-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "registry-tools" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "registry-tools-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-common" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-common-bin" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-common-bin-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-dev" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-dsdb-modules" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-dsdb-modules-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-libs" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-libs-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-testsuite" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-testsuite-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-vfs-modules" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "samba-vfs-modules-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "smbclient" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "smbclient-dbgsym" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "winbind" }, { "binary_version": "2:4.15.9+dfsg-0ubuntu0.2", "binary_name": "winbind-dbgsym" } ] }