Use-After-Free Vulnerability in Busybox's Awk Applet
CVE-2021-42379

7.2HIGH

Key Information:

Vendor

Busybox

Status
Vendor
CVE Published:
15 November 2021

What is CVE-2021-42379?

A use-after-free vulnerability exists within Busybox's awk applet, specifically triggered during the processing of specially crafted awk patterns in the next_input_file function. This flaw can potentially lead to a denial of service condition and may allow for code execution, posing a significant risk if exploited effectively. Users of affected versions should be vigilant and apply updates to mitigate risks.

Affected Version(s)

busybox < 1.34.0

References

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.