CVE & CISA-KEV Catalog

CVE-2018-7550

HIGH
8.8
CVSS v3
NVD

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.

CWE-125Out-of-bounds ReadCWE-787Out-of-bounds Write

How to fix

Remediation Available
qemuDebian
Fixed in:1:2.12~rc3+dfsg-1CVE-2018-7550
Fixed in:1:2.12~rc3+dfsg-1CVE-2018-7550
Fixed in:1:2.12~rc3+dfsg-1CVE-2018-7550
Fixed in:1:2.12~rc3+dfsg-1CVE-2018-7550
qemuUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-systemUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-system-aarch64Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
qemu-system-armUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-system-mipsUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-system-ppcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-system-s390xUbuntu
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-system-sparcUbuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1
qemu-system-x86Ubuntu
Fixed in:2.0.0+dfsg-2ubuntu1.41USN-3649-1
Fixed in:1:2.5+dfsg-5ubuntu10.28USN-3649-1
Fixed in:1:2.11+dfsg-1ubuntu7.1USN-3649-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

0.64%probability of exploitation in 30 days
46thpercentile

Moderate risk: more likely to be exploited than 46% of all known CVEs.

References

Vendor Advisory1
Other references1

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2014-0160High7.5100%KEVFix
CVE-2025-5777High7.5100%KEV + RansomFix
CVE-2021-4034High7.895%KEVFix
CVE-2023-21769High7.592%-Fix
CVE-2023-49285High8.689%-Fix
CVE-2020-8794Critical9.889%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.