Out-of-bounds Write Affecting upx package, versions <4.0.2-r0



    Attack Complexity Low
    User Interaction Required
    Availability High
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5.5 medium

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  • Snyk ID SNYK-ALPINE317-UPX-3267269
  • published 3 Feb 2023
  • disclosed 12 Jan 2023

How to fix?

Upgrade Alpine:3.17 upx to version 4.0.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream upx package and not the upx package as distributed by Alpine:3.17. See How to fix? for Alpine:3.17 relevant fixed versions and status.

A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.