Denial of service fixes:
Evgeny Vereshchagin discovered several ways in which an authenticated
local attacker could cause a crash (denial of service) in
dbus-daemon --system or a custom DBusServer. In uncommon configurations
these could potentially be carried out by an authenticated remote
attacker.
• An invalid array of fixed-length elements where the length of the
array is not a multiple of the length of the element would cause an
assertion failure in debug builds or an out-of-bounds read in
production builds. This was a regression in version 1.3.0.
(dbus#413, CVE-2022-42011; Simon McVittie)
• A syntactically invalid type signature with incorrectly nested
parentheses and curly brackets would cause an assertion failure in
debug builds. Similar messages could potentially result in a crash or
incorrect message processing in a production build, although we are
not aware of a practical example. (dbus#418, CVE-2022-42010;
Simon McVittie)
• A message in non-native endianness with out-of-band Unix file
descriptors would cause a use-after-free and possible memory
corruption in production builds, or an assertion failure in debug
builds. This was a regression in version 1.3.0. (dbus#417,
CVE-2022-42012; Simon McVittie)
https://gitlab.freedesktop.org/dbus/dbus/-/blob/dbus-1.12.24/NEWS
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
29586aed96