QID 376047

Date Published: 2021-11-18

QID 376047: BusyBox Information Leak and Denial of Service (DoS) Vulnerability

BusyBox is a software suite of many useful Unix utilities, known as applets, that are packaged as a single executable file. Within BusyBox you can find a full-fledged shell, a DHCP client/server, and small utilities such as cp, ls, grep, and others.

An out-of-bounds heap read in unlzma leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that internally supports LZMA compression.

Affected Versions:
1.27.0-1.33.1

QID Detection Logic(Authenticated):
This QID checks for the vulnerable versions of BusyBox by checking the version from man page of BusyBox

Successful exploitation of the vulnerability may allow attackers to cause Denial of Service attack.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 3.3 severity.
    • Solution
    Customers are advised to update to BusyBox version 1.34.0 or later, for more info please refer here

    Vendor References

    CVEs related to QID 376047

    CVE-2021-42374 |
    Software Advisories
    Advisory ID Software Component Link
    NA URL Logo busybox.net/
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