Memory corruption in QEMU - CVE-2018-7550

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Main Vulnerability Database Vulnerabilities #VU11163

Memory corruption in QEMU - CVE-2018-7550

Published: March 19, 2018 / Updated: March 21, 2018


Vulnerability identifier: #VU11163
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-7550
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows an adjacent attacker to execute arbitrary code on the target system.

The weakness exists in the load_multiboot function due to out-of-bounds read or write. An adjacent attacker can load a kernel image during the boot process, which may cause the mh_load_end_addr address to be greater than the mh_bss_end_addr address, trigger memory corruption and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Affected software

QEMU
Gentoo Linux
Debian Linux
Amazon Linux AMI
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux EUS Compute Node
SUSE Linux
Opensuse
Fedora
Red Hat Virtualization
Red Hat Virtualization for IBM Power LE
qemu

How to mitigate CVE-2018-7550

Install update from vendor's website.

qemu - update to 2.10.2-1.fc27

External References

Related Security Bulletins