CVE-2023-23457: Upx: segv on packlinuxelf64::invert_pt_dynamic() in p_lx_elf.cpp
First published: Thu Jan 12 2023(Updated: )
A Segmentation fault was found in UPX in invert_pt_dynamic() function 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. <a href="https://github.com/upx/upx/issues/631">https://github.com/upx/upx/issues/631</a> <a href="https://github.com/upx/upx/commit/779b648c5f6aa9b33f4728f79dd4d0efec0bf860">https://github.com/upx/upx/commit/779b648c5f6aa9b33f4728f79dd4d0efec0bf860</a>
Credit: patrick@puiterwijk.org patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Upx Project Upx | <2022-11-23 | |
| Fedoraproject Fedora | =36 | |
| Fedoraproject Fedora | =37 |
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Reference Links
- https://github.com/upx/upx/issues/631
- https://github.com/upx/upx/commit/779b648c5f6aa9b33f4728f79dd4d0efec0bf860
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2160386
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2160385
- https://bugzilla.redhat.com/show_bug.cgi?id=2160382
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EL3BVKIGG3SH6I3KPOYQAWCBD4UMPOPI/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TGEP3FBNRZXGLIA2B2ICMB32JVMPREFZ/
- 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/
Frequently Asked Questions
What is the CVE ID of this vulnerability?
The CVE ID of this vulnerability is CVE-2023-23457.
What is the severity of CVE-2023-23457?
The severity of CVE-2023-23457 is medium (5.5).
Which software is affected by CVE-2023-23457?
The software affected by CVE-2023-23457 includes UPX (Upx Project Upx) versions before 2022-11-23 and Fedora versions 36 and 37 (Fedoraproject Fedora).
How can an attacker exploit this vulnerability?
An attacker can exploit this vulnerability by providing a crafted input file that allows invalid memory address access, leading to a denial of service.
Are there any references related to CVE-2023-23457?
Yes, you can find references related to CVE-2023-23457 at the following links: [Link 1](https://github.com/upx/upx/issues/631), [Link 2](https://github.com/upx/upx/commit/779b648c5f6aa9b33f4728f79dd4d0efec0bf860), [Link 3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2160386).
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