An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function slunpackloop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
{ "binaries": [ { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libpam-smbpass", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libsmbsharemodes-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libsmbsharemodes0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13" } ], "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro" }
{ "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libsmbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "libwbclient0", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "python-samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "registry-tools", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-common", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-dev", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-libs", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "smbclient", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" }, { "binary_name": "winbind", "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2" } ], "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro" }
{ "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libparse-pidl-perl", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libsmbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "libwbclient0", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "python-samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "registry-tools", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-common", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-dev", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-libs", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "smbclient", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" }, { "binary_name": "winbind", "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1" } ], "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro" }
{ "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "libsmbclient", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "libwbclient0", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "python3-samba", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "registry-tools", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-common", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-dev", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-libs", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "smbclient", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" }, { "binary_name": "winbind", "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "ctdb", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "libnss-winbind", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "libpam-winbind", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "libsmbclient", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "libsmbclient-dev", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "libwbclient-dev", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "libwbclient0", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "python3-samba", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "registry-tools", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-common", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-common-bin", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-dev", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-dsdb-modules", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-libs", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-testsuite", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "samba-vfs-modules", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "smbclient", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" }, { "binary_name": "winbind", "binary_version": "2:4.15.13+dfsg-0ubuntu1.2" } ], "availability": "No subscription required" }