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CVE-2023-23456

Upx: heap-buffer-overflow in packtmt::pack()

Published: Jan 12, 2023Updated: Apr 11, 2025 Sources: CVE List NVDCWE-787
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.4%
Top 69.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-787

Affected Products

upxupx
Library
DevTools & CI / build-test-tools
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
upxoss-projectATDevTools & CIaka ultimate packer for executables
fedoraprojectoss-projectUSOperating Systemsaka fedora project

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://bugzilla.redhat.com/show_bug.cgi?id=2160381
bugzilla.redhat.com
https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4
github.com
https://github.com/upx/upx/issues/632
github.com
and 3 more references View all →

Timeline

Published
Jan 12, 2023
Last Updated
Apr 11, 2025

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