Vulnerability Details : CVE-2018-5683
Potential exploit
The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.
Vulnerability category: Denial of service
Products affected by CVE-2018-5683
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-5683
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 18 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-5683
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
6.0
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H |
1.5
|
4.0
|
NIST |
CWE ids for CVE-2018-5683
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-5683
-
https://usn.ubuntu.com/3575-1/
USN-3575-1: QEMU vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.securityfocus.com/bid/102518
QEMU CVE-2018-5683 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
https://access.redhat.com/errata/RHSA-2018:2162
RHSA-2018:2162 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
[SECURITY] [DLA 1497-1] qemu security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:0816
RHSA-2018:0816 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2018/01/15/2
oss-security - CVE-2018-5683 Qemu: Out-of-bounds read in vga_draw_text routineMailing List;Patch;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:1104
RHSA-2018:1104 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://lists.gnu.org/archive/html/qemu-devel/2018-01/msg02597.html
Re: [Qemu-devel] [PATCH v3] vga: check the validation of memory addr wheExploit;Mailing List;Third Party Advisory
-
https://www.debian.org/security/2018/dsa-4213
Debian -- Security Information -- DSA-4213-1 qemuThird Party Advisory
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