CVE-2016-20047

Summary

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.

Affected Software

Weaknesses

• CWE-787: Out-of-bounds Write

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

References

• https://www.exploit-db.com/exploits/40392
• http://ekg.chmurka.net/
• https://www.vulncheck.com/advisories/ekg-gadu-local-buffer-overflow-via-username-parameter

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