There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - 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.
    (CVE-2021-30500)

  - A heap buffer overflow read was discovered in upx 4.0.0, because the check in p_lx_elf.cpp is not perfect.
    (CVE-2020-24119)

  - A heap-based buffer over-read was discovered in the invert_pt_dynamic function in p_lx_elf.cpp in UPX
    4.0.0 via a crafted Mach-O file. (CVE-2020-27796)

  - An invalid memory address reference was discovered in the elf_lookup function in p_lx_elf.cpp in UPX 4.0.0
    via a crafted Mach-O file. (CVE-2020-27797)

  - An invalid memory address reference was discovered in the adjABS function in p_lx_elf.cpp in UPX 4.0.0 via
    a crafted Mach-O file. (CVE-2020-27798)

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 在 UPX 4.0.0 中p_lx_elf.cpp 的 invert_pt_dynamic 函式內發現一個透過特製的 Mach-O 檔案發生的堆積型緩衝區過度讀取問題。 (CVE-2020-27796)

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 在 UPX 4.0.0 中的 p_lx_elf.cpp 的 invert_pt_dynamic 函数中发现通过特制的 Mach-O 文件发生的基于堆的缓冲区过度读取。 (CVE-2020-27796)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - 細工された Mach-O ファイルを介して UPX 4.0.0 の p_lx_elf.cpp の invert_pt_dynamic 関数にヒープベースのバッファオーバーリードが発見されました。CVE-2020-27796

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A heap-based buffer over-read was discovered in the invert_pt_dynamic function in p_lx_elf.cpp in UPX     4.0.0 via a crafted Mach-O file. (CVE-2020-27796)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
427474	Alpine: multiple upx packages: security update to 4.0.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	5/16/2025	7/2/2026	high
427474	Alpine: multiple upx packages: security update to 4.0.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	5/16/2025	7/2/2026	high
223482	Linux Distros 未修補的弱點：CVE-2020-27796	Nessus	Misc.	3/4/2025	7/9/2026	high
223482	Linux Distros 未修补的漏洞：CVE-2020-27796	Nessus	Misc.	3/4/2025	7/9/2026	high
223482	Linux Distros のパッチ未適用の脆弱性: CVE-2020-27796	Nessus	Misc.	3/4/2025	7/9/2026	high
223482	Linux Distros Unpatched Vulnerability : CVE-2020-27796	Nessus	Misc.	3/4/2025	7/9/2026	high

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