Stack-Based Buffer Overflow in MAWK by SourceForge
CVE-2017-20229

9.3CRITICAL

Key Information:

Vendor

Mawk

Status
Mawk
Vendor
CVE Published:
28 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2017-20229?

The MAWK tool, up to version 1.3.3-17, is susceptible to a stack-based buffer overflow which enables attackers to execute arbitrary code. This vulnerability arises from insufficient boundary checks on user-supplied input, allowing malicious actors to craft specific inputs that overflow the stack buffer. By doing so, they can execute a return-oriented programming (ROP) chain, gaining shell access with the application's privileges. This situation presents a significant risk to system integrity and user data.

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Affected Version(s)

MAWK 1.3.3-17

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-20229 - Proof of Concept

References

https://www.exploit-db.com/exploits/42357
exploit
https://www.vulncheck.com/advisories/mawk-17-stack-based-...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Juan Sacco <juan.sacco@kpn.com> at KPN Red Team - http://www.kpn.com
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