Use-After-Free Vulnerability in Busybox Awk Applet Exposes Potential Code Execution Risks
CVE-2021-42383

7.2HIGH

Key Information:

Vendor

Busybox

Status
Vendor
CVE Published:
15 November 2021

What is CVE-2021-42383?

A use-after-free vulnerability has been identified in the awk applet of Busybox, which poses significant risks during the processing of specially crafted awk patterns. This weakness can lead to a denial of service, interrupting services and applications reliant on Busybox. Furthermore, it raises concerns over potential code execution under specific conditions, which could be exploited by attackers to gain unauthorized access or control over affected systems. Organizations utilizing Busybox should apply the appropriate patches to mitigate these 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

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