Medium: busybox

Issue Overview:

A flaw was found in BusyBox, where it did not properly sanitize while processing a crafted shell command, leading to a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2021-42376)

A flaw was found in BusyBox, where it did not properly sanitize while processing a crafted awk pattern, leading to possible code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42378)

A flaw was found in BusyBox, where it did not properly sanitize while processing a crafted awk pattern in the next_input_file function, leading to possible code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42379)

A flaw was found in BusyBox, where it did not properly sanitize while processing a crafted awk pattern in the handle_special function, leading to possible code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42384)

A flaw was found in BusyBox, where it did not properly sanitize while processing a crafted awk pattern in the evaluate function, leading to possible code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42385)

A flaw was found in BusyBox, where it did not properly sanitize while processing a crafted awk pattern in the nvalloc function, leading to possible code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-42386)

Affected Packages:

busybox

Issue Correction:
Run yum update busybox to update your system.

New Packages:

i686:  
    busybox-1.34.1-1.13.amzn1.i686  
    busybox-petitboot-1.34.1-1.13.amzn1.i686  
    busybox-debuginfo-1.34.1-1.13.amzn1.i686  
  
src:  
    busybox-1.34.1-1.13.amzn1.src  
  
x86_64:  
    busybox-1.34.1-1.13.amzn1.x86_64  
    busybox-debuginfo-1.34.1-1.13.amzn1.x86_64  
    busybox-petitboot-1.34.1-1.13.amzn1.x86_64  

Additional References

Red Hat: CVE-2021-42376, CVE-2021-42378, CVE-2021-42379, CVE-2021-42384, CVE-2021-42385, CVE-2021-42386

Mitre: CVE-2021-42376, CVE-2021-42378, CVE-2021-42379, CVE-2021-42384, CVE-2021-42385, CVE-2021-42386