SB2020121714 - Denial of service in QEMU in F5 Networks BIG-IP products
Published: December 17, 2020
Security Bulletin ID
SB2020121714
CSH Severity
Medium
Patch available
NO
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 vulnerability.
1) Reachable Assertion (CVE-ID: CVE-2020-27617)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: 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
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
Cybersecurity Help is not aware of any official remediation provided by the vendor.