Medium severity · published Jan 12, 2023
CVE-2023-23456
A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file
5.5
CVSS
0.4%
EPSS
No
On KEV
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
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
36; 37 · source: NVD
UP
Upx · Upx
before 2022-11-24 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-23456
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-23456
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2160381
Patch
https://github.com/upx/upx/commit/510505a85cbe45e51fbd470f1aa8b02157c429d4
Exploit
https://github.com/upx/upx/issues/632
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/
lists.debian.org
https://lists.debian.org/debian-lts-announce/2024/12/msg00013.html
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