CVE-2020-12049
published 2020-06-08CVE-2020-12049: An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the…
PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.57%
43.4th percentile
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | dbus | < dbus 1.12.18-1 (bookworm) | dbus 1.12.18-1 (bookworm) |
| freedesktop | dbus | >= 0 < 1.12.18-1 | 1.12.18-1 |
| freedesktop | dbus | >= 0 < 1.12.18-1 | 1.12.18-1 |
| freedesktop | dbus | >= 0 < 1.12.18-1 | 1.12.18-1 |
| freedesktop | dbus | >= 0 < 1.12.18-1 | 1.12.18-1 |
| freedesktop | dbus | >= 1.3.0 < 1.12.18 | 1.12.18 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Ubuntu
DBus vulnerability
vendor_ubuntu·2020-06-16
CVE-2020-12049 DBus vulnerability
Title: DBus vulnerability
Summary: DBus could be made to crash if it received specially crafted input.
Kevin Backhouse discovered that DBus incorrectly handled file descriptors.
A local attacker could possibly use this issue to cause DBus to crash,
resulting in a denial of service.
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Ubuntu
DBus vulnerability
vendor_ubuntu·2020-06-16
CVE-2020-12049 DBus vulnerability
Title: DBus vulnerability
Summary: DBus could be made to crash if it received specially crafted input.
USN-4398-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
Kevin Backhouse discovered that DBus incorrectly handled file descriptors.
A local attacker could possibly use this issue to cause DBus to crash,
resulting in a denial of service.
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Red Hat
dbus: denial of service via file descriptor leak
vendor_redhat·2020-06-04·CVSS 5.5
CVE-2020-12049 [MEDIUM] CWE-400 dbus: denial of service via file descriptor leak
dbus: denial of service via file descriptor leak
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
An uncontrolled resource consumption vulnerability was discovered in D-Bus. The DBusServer leaks file descriptors when a message exceeds the per-message file descriptor limit. This flaw allows a local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket, to make the system service reach i
Debian
CVE-2020-12049: dbus - An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdb...
vendor_debian·2020·CVSS 5.5
CVE-2020-12049 [MEDIUM] CVE-2020-12049: dbus - An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdb...
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
Scope: local
bookworm: resolved (fixed in 1.12.18-1)
bullseye: resolved (fixed in 1.12.18-1)
forky: resolved (fixed in 1.12.18-1)
sid: resolved (fixed in 1.12.18-1)
trixie: resolved (fixed in 1.12.18-1)
OSV
CVE-2020-12049: An issue was discovered in dbus >= 1
osv·2020-06-08·CVSS 5.5
CVE-2020-12049 [MEDIUM] CVE-2020-12049: An issue was discovered in dbus >= 1
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-12049 dbus: denial of service via file descriptor leak [fedora-all]
bugzilla·2020-06-19·CVSS 5.5
CVE-2020-12049 [MEDIUM] CVE-2020-12049 dbus: denial of service via file descriptor leak [fedora-all]
CVE-2020-12049 dbus: denial of service via file descriptor leak [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions
Bugzilla
CVE-2020-12049 dbus: denial of service via file descriptor leak
bugzilla·2020-06-19·CVSS 5.5
CVE-2020-12049 [MEDIUM] CVE-2020-12049 dbus: denial of service via file descriptor leak
CVE-2020-12049 dbus: denial of service via file descriptor leak
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
References:
http://www.openwall.com/lists/oss-security/2020/06/04/3
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16
Discussion
http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.htmlhttp://www.openwall.com/lists/oss-security/2020/06/04/3https://gitlab.freedesktop.org/dbus/dbus/-/issues/294https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16https://security.gentoo.org/glsa/202007-46https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leakhttps://usn.ubuntu.com/4398-1/https://usn.ubuntu.com/4398-2/http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.htmlhttp://www.openwall.com/lists/oss-security/2020/06/04/3https://gitlab.freedesktop.org/dbus/dbus/-/issues/294https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16https://security.gentoo.org/glsa/202007-46https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leakhttps://usn.ubuntu.com/4398-1/https://usn.ubuntu.com/4398-2/
2020-06-08
Published