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Critical · 9.8 CVE-2017-20229 EUVD-2017-18951

MAWK 1.3.3-17 Stack-Based Buffer Overflow

Published Mar 28, 2026 · Updated Jul 15, 2026 · Assigned by VulnCheck

Description

MAWK 1.3.3-17 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by exploiting inadequate boundary checks on user-supplied input. Attackers can craft malicious input that overflows the stack buffer and execute a return-oriented programming chain to spawn a shell with application privileges.

Affected products

VendorProductAffectedFixed
mawk MAWK 1.3.3-17 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Ubuntu 18.04 LTS mawk No fix yet —
Ubuntu 16.04 LTS mawk No fix yet —
Ubuntu 14.04 LTS mawk No fix yet —

References