Advisories

EKG Gadu 1.9 Local Buffer Overflow via Username Parameter

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severity
high
date
Affecting
  • EKG Gadu <= 1:1.9~pre+r2855-3+b1

CWE
  • CWE-787 Out-of-bounds Write
CVSS
8.6
CVSS V4 Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Juan Sacco
Description
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.

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