Out-of-bounds Read in Qemu
CVE-2018-7550
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.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (45.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Qemu
- Canonical Ubuntu_linux — versions 14.04, 16.04, 17.10
- Debian Debian_linux — versions 7.0, 8.0, 9.0
- Redhat Enterprise_linux_desktop — versions 7.0
- Redhat Enterprise_linux_server — versions 7.0
- Redhat Enterprise_linux_server_aus — versions 7.6, 7.7
- Redhat Enterprise_linux_server_eus — versions 7.5, 7.6, 7.7
- Redhat Enterprise_linux_server_tus — versions 7.6, 7.7
- Redhat Enterprise_linux_workstation — versions 7.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Patch, Mailing List)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry)
- cve@mitre.org (Issue Tracking, Vendor Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-7550?
- CVE-2018-7550 is a high-severity vulnerability in Qemu, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2018-03-01.
- How severe is CVE-2018-7550?
- High severity. CVSS v3 base score is 8.8 out of 10.