Vulnerability identifier: #VU32091

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5667

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

The vulnerability allows a local authenticated user to a crash the entire system.

The sdhci_sdma_transfer_multi_blocks function in hw/sd/sdhci.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (out-of-bounds heap access and crash) or execute arbitrary code on the QEMU host via vectors involving the data transfer length.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: 3.1.3

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External links
http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=42922105beb14c2fc58185ea022b9f72fb5465e9
http://www.openwall.com/lists/oss-security/2017/01/30/2
http://www.openwall.com/lists/oss-security/2017/01/31/10
http://www.openwall.com/lists/oss-security/2017/02/12/1
http://www.securityfocus.com/bid/95885
http://bugzilla.redhat.com/show_bug.cgi?id=1417559
http://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
http://security.gentoo.org/glsa/201702-28

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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.