Reachable Assertion in QEMU - CVE-2020-27617

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Main Vulnerability Database Vulnerabilities #VU48761

Reachable Assertion in QEMU - CVE-2020-27617

Published: November 6, 2020 / Updated: December 2, 2020


Vulnerability identifier: #VU48761
CSH Severity: Medium
CVSSv4.0: 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:Green
CVE-ID: CVE-2020-27617
CWE-ID: CWE-617
Exploitation vector: Adjecent network
Exploit availability: No public exploit available
Vulnerable software:
QEMU
Software vendor:
QEMU

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.


Remediation

Install updates from vendor's website.

External links