#VU16554 Integer overflow in QEMU - CVE-2018-17958

Vulnerability identifier: #VU16554

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-17958

CWE-ID: CWE-190

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The vulnerability exists due to a boundary error in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used. An adjacent attacker can trigger integer overflow and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: 0.1 - 2.12.50

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External links
https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03269.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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