Home/CVE/The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute a
CVE

CVE-2018-7550

The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute a

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.

HIGH · CVSS 8.8 EPSS 0.00084
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

9
qemu<= 2.11.1
debian linuxall versions
canonical ubuntu linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
redhat enterprise linux server eusall versions
redhat enterprise linux server tusall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPotentially Suspicious Usage Of Qemu
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Mar 2018 · 05:29 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

16
suse-csafSUSE-SU-2018:2340-1
rhsaRHSA-2018:2462Important
rhsaRHSA-2018:1646Important
rhsaRHSA-2018:1644Important
rhsaRHSA-2018:1645Important
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/103181Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1549798Issue TrackingVendor Advisory
https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
https://lists.debian.org/debian-lts-announce/2018/04/msg00015.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/04/msg00016.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing ListThird Party Advisory
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