CVE-2021-42386

A use-after-free in Busybox’s awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the nvalloc function

Summary:

A use-after-free in Busybox’s awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the nvalloc function

Reference Links(if available):

  • https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/
  • CVSS Score (if available)

    v2: / HIGHAV:N/AC:L/Au:S/C:P/I:P/A:P

    v3: / HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

    Links to Exploits(if available)