Debian update for qemu

Published: 2020-07-24

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-13754 CVE-2020-8608
CWE-ID	CWE-787 CWE-119
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	Debian Linux Operating systems & Components / Operating system qemu (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU31803

Risk: Medium

CVSSv3.1: 7.8 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13754

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in hw/pci/msix.c. A local user on the guest operating system can send specially crafted address in an msi-x mmio operation, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code.

Mitigation

Update qemu package to version 1:3.1+dfsg-8+deb10u7.

Vulnerable software versions

Debian Linux: All versions

qemu (Debian package): before 1:3.1+dfsg-8+deb10u7

External links

http://www.debian.org/security/2020/dsa-4733

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Buffer overflow

EUVDB-ID: #VU25456

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8608

CWE-ID: CWE-119 - Memory corruption