+The "smashy smashy egg man" release. + +Security fixes: + +• Do not accept an extra fd in the padding of a cmsg message, which + could lead to a 4-byte heap buffer overrun. + (CVE-2014-3635, fd.o #83622; Simon McVittie) + +• Reduce default for maximum Unix file descriptors passed per message + from 1024 to 16, preventing a uid with the default maximum number of + connections from exhausting the system bus' file descriptors under + Linux's default rlimit. Distributors or system administrators with a + more restrictive fd limit may wish to reduce these limits further. + + Additionally, on Linux this prevents a second denial of service + in which the dbus-daemon can be made to exceed the maximum number + of fds per sendmsg() and disconnect the process that would have + received them. + (CVE-2014-3636, fd.o #82820; Alban Crequy) + +• Disconnect connections that still have a fd pending unmarshalling after + a new configurable limit, pending_fd_timeout (defaulting to 150 seconds), + removing the possibility of creating an abusive connection that cannot be + disconnected by setting up a circular reference to a connection's + file descriptor. + (CVE-2014-3637, fd.o #80559; Alban Crequy) + +• Reduce default for maximum pending replies per connection from 8192 to 128, + mitigating an algorithmic complexity denial-of-service attack + (CVE-2014-3638, fd.o #81053; Alban Crequy) + +• Reduce default for authentication timeout on the system bus from + 30 seconds to 5 seconds, avoiding denial of service by using up + all unauthenticated connection slots; and when all unauthenticated + connection slots are used up, make new connection attempts block + instead of disconnecting them. + (CVE-2014-3639, fd.o #80919; Alban Crequy)
Please test and stabilize: =sys-apps/dbus-1.8.8 alpha amd64 arm hppa ia64 ppc ppc64 sparc x86
Stable for HPPA.
amd64 stable
x86 stable
sparc stable
ppc64 stable
alpha stable
arm stable
ia64 stable
CVE-2014-3639 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3639): The dbus-daemon in D-Bus before 1.6.24 and 1.8.x before 1.8.8 does not properly close old connections, which allows local users to cause a denial of service (incomplete connection consumption and prevention of new connections) via a large number of incomplete connections. CVE-2014-3638 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3638): The bus_connections_check_reply function in config-parser.c in D-Bus before 1.6.24 and 1.8.x before 1.8.8 allows local users to cause a denial of service (CPU consumption) via a large number of method calls. CVE-2014-3637 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3637): D-Bus 1.3.0 through 1.6.x before 1.6.24 and 1.8.x before 1.8.8 does not properly close connections for processes that have terminated, which allows local users to cause a denial of service via a D-bus message containing a D-Bus connection file descriptor. CVE-2014-3635 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-3635): Off-by-one error in D-Bus 1.3.0 through 1.6.x before 1.6.24 and 1.8.x before 1.8.8, when running on a 64-bit system and the max_message_unix_fds limit is set to an odd number, allows remote attackers to cause a denial of service (dbus-daemon crash) or possibly execute arbitrary code by sending one more file descriptor than the limit, which triggers a heap-based buffer overflow or an assertion failure.
ppc stable. Maintainer(s), please cleanup. Security, please add it to the existing request, or file a new one.
Added to existing glsa draft.
This issue was resolved and addressed in GLSA 201412-12 at http://security.gentoo.org/glsa/glsa-201412-12.xml by GLSA coordinator Mikle Kolyada (Zlogene).
