Vulnerability Details : 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 category: Memory CorruptionExecute code
Products affected by CVE-2018-7550
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-7550
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-7550
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
8.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
2.0
|
6.0
|
NIST |
CWE ids for CVE-2018-7550
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-7550
-
https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
QEMU - Out of bound memory access on multiboot kernel load (CVE-2018-7550) · Advisory · orangecertcc/security-research · GitHub
-
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
[SECURITY] [DLA 1497-1] qemu security updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/04/msg00015.html
[SECURITY] [DLA 1350-1] qemu-kvm security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:2462
RHSA-2018:2462 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/103181
Qemu CVE-2018-7550 Out of Bounds Read and Write Arbitrary Code Execution VulnerabilityThird Party Advisory;VDB Entry
-
https://lists.debian.org/debian-lts-announce/2018/04/msg00016.html
[SECURITY] [DLA 1351-1] qemu security updateMailing List;Third Party Advisory
-
https://www.debian.org/security/2018/dsa-4213
Debian -- Security Information -- DSA-4213-1 qemuThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1549798
1549798 – (CVE-2018-7550) CVE-2018-7550 QEMU: i386: multiboot OOB access while loading kernel imageIssue Tracking;Vendor Advisory
-
https://access.redhat.com/errata/RHSA-2018:1369
RHSA-2018:1369 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.html
[Qemu-devel] [PATCH] multiboot: check mh_load_end_addr address fieldMailing List;Patch
-
https://usn.ubuntu.com/3649-1/
USN-3649-1: QEMU vulnerabilities | Ubuntu security noticesThird Party Advisory
Jump to