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CVE-2018-7550

Date: February 28, 2018

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.

Severity Score

Related Resources (16)

https://access.redhat.com/errata/RHSA-2018:1369
https://www.debian.org/security/2018/dsa-4213
https://lists.debian.org/debian-lts-announce/2018/04/msg00015.html
https://access.redhat.com/security/cve/CVE-2018-7550
http://www.securityfocus.com/bid/103181
https://bugzilla.redhat.com/show_bug.cgi?id=1549798
https://lists.debian.org/debian-lts-announce/2018/04/msg00016.html
https://usn.ubuntu.com/3649-1/
https://security-tracker.debian.org/tracker/CVE-2018-7550
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://nvd.nist.gov/vuln/detail/CVE-2018-7550
https://github.com/orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-7550
https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06890.html
https://access.redhat.com/errata/RHSA-2018:2462
https://www.mend.io/vulnerability-database/CVE-2018-7550

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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