UPX p_lx_elf.cpp invert_pt_dynamic memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in UPX. The affected element is the function PackLinuxElf64::invert_pt_dynamic of the file p_lx_elf.cpp. This manipulation causes memory corruption. This vulnerability is handled as CVE-2023-23457. There is not any exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in UPX (affected version unknown) and classified as problematic. Affected by this vulnerability is the function PackLinuxElf64::invert_pt_dynamic of the file p_lx_elf.cpp. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

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.

The weakness was released 01/12/2023 as 631. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-23457 since 01/12/2023. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 779b648c5f6aa9b33f4728f79dd4d0efec0bf860 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-27557). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 779b648c5f6aa9b33f4728f79dd4d0efec0bf860

Timelineinfo

01/12/2023 🔍
01/12/2023 +0 days 🔍
01/12/2023 +0 days 🔍
10/08/2025 +1000 days 🔍

Sourcesinfo

Product: github.com

Advisory: 631
Status: Confirmed

CVE: CVE-2023-23457 (🔍)
GCVE (CVE): GCVE-0-2023-23457
GCVE (VulDB): GCVE-100-218191
EUVD: 🔍

Entryinfo

Created: 01/12/2023 22:34
Updated: 10/08/2025 10:30
Changes: 01/12/2023 22:34 (41), 02/05/2023 11:02 (11), 04/11/2025 16:58 (27), 10/08/2025 10:30 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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