Red Hat update for qemu-kvm-rhev

Published: 2020-06-26

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-7039 CVE-2020-8608
CWE-ID	CWE-122 CWE-119
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	qemu-kvm-rhev (Red Hat package) Operating systems & Components / Operating system package or component Red Hat OpenStack for IBM Power Server applications / Other server solutions Red Hat OpenStack Server applications / Other server solutions
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU25458

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-2020-7039

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows an attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the tcp_emu() function in tcp_subr.c in libslirp. An attacker can issue specially crafted IRC DCC commands in EMU_IRC, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

qemu-kvm-rhev (Red Hat package): 2.12.0-33.el7_7.10

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 13.0

External links

http://access.redhat.com/errata/RHSA-2020:2730

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.

2) Buffer overflow

EUVDB-ID: #VU25456