CVE-2018-7550

Description

The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.12%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:1369 third party advisory vendor advisory
https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.html mailing list patch
https://lists.debian.org/debian-lts-announce/2018/04/msg00016.html third party advisory mailing list
https://usn.ubuntu.com/3649-1/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html third party advisory mailing list
https://www.debian.org/security/2018/dsa-4213 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00015.html third party advisory mailing list
http://www.securityfocus.com/bid/103181 vdb entry third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1549798 issue tracking vendor advisory
https://access.redhat.com/errata/RHSA-2018:2462 third party advisory vendor advisory
https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53

Frequently Asked Questions

What is the severity of CVE-2018-7550?
CVE-2018-7550 has been scored as a high severity vulnerability.
How to fix CVE-2018-7550?
To fix CVE-2018-7550, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7550 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-7550 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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