Advisories

RealTerm Serial Terminal 2.0.0.70 SEH Overflow Crash

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severity
medium
date
Affecting
  • RealTerm: Serial Terminal <= 2.0.0.70

CWE
  • CWE-787 Out-of-bounds Write
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Alejandra Sánchez
Description
RealTerm Serial Terminal 2.0.0.70 contains a stack-based buffer overflow vulnerability in the Echo Port field that allows local attackers to crash the application by triggering a structured exception handler (SEH) chain corruption. Attackers can craft a malicious input string with 268 bytes of padding followed by SEH overwrite values and paste it into the Port field to cause denial of service.

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