NULL Pointer Dereference Affecting upx package, versions <4.0.0-r0


0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.19% (56th percentile)
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NVD
7.8 high

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  • Snyk ID SNYK-ALPINE317-UPX-3144643
  • published 23 Nov 2022
  • disclosed 27 May 2021

How to fix?

Upgrade Alpine:3.17 upx to version 4.0.0-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. See How to fix? for Alpine:3.17 relevant fixed versions and status.

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.