Description
A heap buffer overflow read was discovered in upx 4.0.0, because the check in p_lx_elf.cpp is not perfect.
References (4)
Core 4
Core References
Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://github.com/upx/upx/issues/388
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSQRO7YC72PSYDQG4PQLQYXZTZE3B4YV/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JE54WKVU7MATB4WZD3MJFBAHFRJ3NTQX/
Technical Description x_refsource_misc
https://cwe.mitre.org/data/definitions/126.html
Scores
CVSS v3
7.1
EPSS
0.0040
EPSS Percentile
60.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (3)
fedoraproject/fedora
33
fedoraproject/fedora
34
upx/upx
4.0.0
Published
May 14, 2021
Tracked Since
Feb 18, 2026