#VU12554 Integer overflow in QEMU - CVE-2017-5898

Vulnerability identifier: #VU12554

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-2017-5898

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the emulated_apdu_from_guest function in usb/dev-smartcard-reader.c due to integer overflow when built with the CCID Card device emulator support. A local attacker can cause the service to crash via a large Application Protocol Data Units (APDU) unit

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: All versions

---

External links
https://git.qemu.org/?p=qemu.git;a=commit;h=c7dfbf322595ded4e70b626bf83158a9f3807c6a

---

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.