CVE-2017-5579
Published: 15 March 2017
Memory leak in the serial_exit_core function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations.
Notes
| Author | Note |
|---|---|
| tyhicks | affected code is in hw/serial.c in qemu-kvm on 12.04. serial_init_core() allocates a number of things but there is no serial_exit_core() present. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
| bionic |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| cosmic |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| disco |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| eoan |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| focal |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| groovy |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| hirsute |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(2.0.0+dfsg-2ubuntu1.33)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(1:2.5+dfsg-5ubuntu10.11)
|
|
| yakkety |
Released
(1:2.6.1+dfsg-0ubuntu5.4)
|
|
| zesty |
Not vulnerable
(1:2.8+dfsg-3ubuntu2)
|
|
|
Patches: upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=8409dc884a201bf74b30a9d232b6bbdd00cb7e2b |
||
|
qemu-kvm Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| precise |
Ignored
(end of ESM support, was needed)
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |