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Advisories

Ettercap through 0.8.4.1 Stack Buffer Overflow via WPA CCMP Decryption

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Severity
high
Date
Affecting

  • ettercap <= 0.8.4.1

CWE
  • CWE-191 Integer Underflow (Wrap or Wraparound)
CVSS
7.7
CVSS V4 Vector
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Adiel Sol, Arad Inbar, Erez Cohen, Nir Somech, Ben Grinberg, Daniel Lubel, Shir Sadon (DREAM Security Research Team), Emilio Escobar
Description
Ettercap through 0.8.4.1 contains an integer underflow in ccmp_decrypt() in src/ec_encryption_ccmp.c that subtracts the 8-byte CCMP trailer without checking minimum length. Attackers on a network whose WPA key is loaded can send a short crafted CCMP frame to overflow a stack buffer in the Ettercap process, which normally runs as root.

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