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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.61% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125, CWE-787
- Affected
- qemu/qemu · debian/debian linux · canonical/ubuntu linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server eus · redhat/enterprise linux server tus · redhat/enterprise linux workstation
- Source
- cve@mitre.org
References
- http://www.securityfocus.com/bid/103181Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1369Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2462Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1549798Issue Tracking, Vendor Advisory
- https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
- https://lists.debian.org/debian-lts-announce/2018/04/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00016.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.htmlMailing List, Patch
- https://usn.ubuntu.com/3649-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4213Third Party Advisory
- http://www.securityfocus.com/bid/103181Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1369Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2462Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1549798Issue Tracking, Vendor Advisory
- https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
- https://lists.debian.org/debian-lts-announce/2018/04/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00016.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.htmlMailing List, Patch
- https://usn.ubuntu.com/3649-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4213Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.