CVE-2018-5683
MEDIUMCVSS 6/10EPSS 0.69%
Last modified
CVE-2018-5683 is a medium-severity vulnerability rated 6/10 on the CVSS scale. 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.. EPSS estimates a 0.69% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 2.11.1 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Aus | 7.7 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.7 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.7 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Canonical | Ubuntu Linux | 14.04 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 17.10 |
References
- http://www.openwall.com/lists/oss-security/2018/01/15/2Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102518Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0816Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2162Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2018-01/msg02597.htmlExploit, Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4213Third Party Advisory
- http://www.openwall.com/lists/oss-security/2018/01/15/2Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102518Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:0816Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2162Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2018-01/msg02597.htmlExploit, Mailing List, Third Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4213Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-5683?
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.
How severe is CVE-2018-5683?
CVE-2018-5683 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.
How do I fix CVE-2018-5683?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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