CVE-2021-30500 Information

Description

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

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://github.com/upx/upx/issues/485 https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc https://bugzilla.redhat.com/show_bug.cgi?id=1948692

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8