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Status published
Medium
CVE-2023-23457
Upx: segv on packlinuxelf64::invert_pt_dynamic() in p_lx_elf.cpp
Vulnerability Description
A Segmentation fault was found in UPX in PackLinuxElf64::invert_pt_dynamic() in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Red Hat would like to thank Chenweijia for reporting this issue.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2160382
- https://github.com/upx/upx/commit/779b648c5f6aa9b33f4728f79dd4d0efec0bf860
- https://github.com/upx/upx/issues/631
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/
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Vulnerable Versions:
4.0.2
Timeline
Official Publish:
January 12th, 2023
Last Modified:
April 7th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L