Denial of service in QEMU in F5 Networks BIG-IP products

1) Reachable Assertion

EUVDB-ID: #VU48761

Risk: Medium

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

CVE-ID: CVE-2020-27617

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a reachable assertion within the eth_get_gso_type() function in net/eth.c in QEMU. A remote user with access to guest operating system can send specially crafted packet data that lacks a valid Layer 3 protocol, trigger an assertion failure and crash the QEMU process.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

BIG-IP SSLO: 13.1.0 - 16.0.1

BIG-IP PEM: 13.1.0 - 16.0.1

BIG-IP Link Controller: 13.1.0 - 16.0.1

BIG-IP GTM: 13.1.0 - 16.0.1

BIG-IP FPS: 13.1.0 - 16.0.1

BIG-IP DNS: 13.1.0 - 16.0.1

BIG-IP DDHD: 13.1.0 - 16.0.1

BIG-IP ASM: 13.1.0 - 16.0.1

BIG-IP APM: 13.1.0 - 16.0.1

BIG-IP Analytics: 13.1.0 - 16.0.1

BIG-IP AFM: 13.1.0 - 16.0.1

BIG-IP Advanced WAF: 13.1.0 - 16.0.1

BIG-IP AAM: 13.1.0 - 16.0.1

BIG-IP LTM: 13.1.0 - 16.0.1

BIG-IP: 13.1.0 - 16.0.1

External links

http://support.f5.com/csp/article/K41142448

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.