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Out-of-bounds Write


Severity High
Score 9.8/10


** DISPUTED ** Dnsmasq versions 2.86rc1 through v2.87test4 have a heap-based buffer overflow in "print_mac" called from "log_packet" and "dhcp_reply". NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge." NOTE: "SCA AppSec team researched the issue and approves that this is not a security issue as the reports are all machine generated by the Google fuzzer. The problem is that the fuzzing framework it's using is wrong and failures are caused by wrong fuzzing only."

  • LOW
  • HIGH
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-787 - Out-of-Bounds Write

Out-of-bounds write vulnerability is a memory access bug that allows software to write data past the end or before the beginning of the intended buffer. This may result in the corruption of data, a crash, or arbitrary code execution.

Advisory Timeline

  • Published