Description
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.
References (3)
Core 3
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1948692
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/upx/upx/issues/485
Patch, Third Party Advisory x_refsource_misc
https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc
Scores
CVSS v3
7.8
EPSS
0.0027
EPSS Percentile
50.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-476
Status
published
Products (3)
fedoraproject/fedora
33
redhat/enterprise_linux
7.0
upx/upx
4.0.0
Published
May 27, 2021
Tracked Since
Feb 18, 2026