CVE-2021-42379: Use After Free
A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the nextinputfile function
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-42379?
CVE-2021-42379 is a use-after-free vulnerability in Busybox's awk applet that can result in denial of service and possibly code execution.
What is the severity of CVE-2021-42379?
The severity of CVE-2021-42379 is not specified in the provided information.
How does CVE-2021-42379 impact Busybox?
CVE-2021-42379 can lead to denial of service and possible code execution when processing a crafted awk pattern in the next_input_file function of Busybox's awk applet.
Which versions of Busybox are affected by CVE-2021-42379?
Busybox versions 1:1.27.2-2ubuntu3.4, 1:1.30.1-4ubuntu6.4, 1:1.30.1-6ubuntu2.1, 1:1.30.1-6ubuntu3.1, 1:1.30.1-7ubuntu2, and 1.34.0 are affected by CVE-2021-42379.
How can I fix CVE-2021-42379?
To fix CVE-2021-42379, update Busybox to a version that includes the fix provided by the vendor.