Denial of Service Vulnerability in BusyBox's Ash Applet
CVE-2021-42375

5.5MEDIUM

Key Information:

Vendor

Busybox

Status
Busybox
Vendor
CVE Published:
15 November 2021

What is CVE-2021-42375?

A vulnerability exists in BusyBox's ash applet, where improper handling of specific characters in crafted shell commands can lead to a denial of service. This occurs when the shell incorrectly interprets certain characters as reserved, which may create conditions for service disruption when inputs are improperly filtered.

Affected Version(s)

busybox < 1.34.0

References

https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabil...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.