Vulnerability Description
Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 2.11.2 |
| Opensuse | Leap | 42.3 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Canonical | Ubuntu Linux | 14.04 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.htmlMailing ListRelease NotesThird Party Advisory
- http://www.openwall.com/lists/oss-security/2018/03/09/1Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/103350Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1369Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1416Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2162Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1553402Issue TrackingThird Party Advisory
- https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.htmlMailing ListPatchVendor Advisory
- https://usn.ubuntu.com/3649-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.htmlMailing ListRelease NotesThird Party Advisory
- http://www.openwall.com/lists/oss-security/2018/03/09/1Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/103350Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:1369Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1416Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2162Third Party Advisory
FAQ
What is CVE-2018-7858?
CVE-2018-7858 is a vulnerability with a CVSS score of 5.5 (MEDIUM). Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) ...
How severe is CVE-2018-7858?
CVE-2018-7858 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-7858?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Opensuse Leap, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus.