SB2020120221 - Denial of service in QEMU
Published: December 2, 2020
Security Bulletin ID
SB2020120221
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Reachable Assertion (CVE-ID: CVE-2020-27617)
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 update from vendor's website.