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Advisories

Ettercap through 0.8.4.1 Heap Out-of-Bounds Read via TLS SNI Parsing

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Severity
high
Date
Affecting

  • ettercap <= 0.8.4.1

CWE
  • CWE-125 Out-of-bounds Read
CVSS
7.2
CVSS V4 Vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/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 a heap out-of-bounds read vulnerability in sslw_get_clienthello_sni() in src/ec_sslwrap.c that trusts the unchecked 16-bit SNI length field. Network-adjacent attackers can send crafted TLS ClientHello messages during SSL interception to leak up to 64 KB of heap memory upstream or crash Ettercap.

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