#VU18274 Buffer overflow in QEMU - CVE-2019-6501

Vulnerability identifier: #VU18274

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-6501

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

The vulnerability allows a local user to perform denial of service attack.

The vulnerability exists due to a boundary error within the scsi_handle_inquiry_reply in hw/scsi/scsi-generic.c. A local user can create a specially crafted application, trigger buffer overflow and crash the affected emulator.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: 3.1.0

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External links
https://www.openwall.com/lists/oss-security/2019/01/24/1
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KJMTVGDLA654HNCDGLCUEIP36SNJEKK7/
https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg02324.html

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.