7.5

CVE-2018-12617

Exploit
qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Qemu ≫ Qemu Version <= 2.12.50
Canonical ≫ Ubuntu Linux Version14.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version16.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version18.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version18.10
Debian ≫ Debian Linux Version8.0
Debian ≫ Debian Linux Version9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 25.35% 0.977
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://seclists.org/bugtraq/2019/May/76
Third Party Advisory
Mailing List
https://usn.ubuntu.com/3826-1/
Third Party Advisory
https://www.debian.org/security/2019/dsa-4454
Third Party Advisory
http://www.securityfocus.com/bid/104531
Third Party Advisory
VDB Entry
https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6
Third Party Advisory
Exploit
https://lists.debian.org/debian-lts-announce/2019/02/msg00041.html
Third Party Advisory
Mailing List
https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html
Patch
Third Party Advisory
Mailing List
https://www.exploit-db.com/exploits/44925/
Third Party Advisory
Exploit
VDB Entry