UPX up to 4.2.2 bele.h get_ne64 heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in UPX up to 4.2.2. Impacted is the function get_ne64 of the file bele.h. The manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2024-3209. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability was found in UPX up to 4.2.2. It has been rated as critical. This issue affects the function get_ne64 of the file bele.h. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at drive.google.com. The identification of this vulnerability is CVE-2024-3209. The exploitation is known to be easy. Technical details as well as a public exploit are known.

The exploit is available at drive.google.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. The vulnerability scanner Nessus provides a plugin with the ID 275970 (TencentOS Server 4: upx (TSSA-2025:0591)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (275970). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (VulDB): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 275970
Nessus Name: TencentOS Server 4: upx (TSSA-2025:0591)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/02/2024 🔍
04/02/2024 +0 days 🔍
04/02/2024 +0 days 🔍
11/21/2025 +598 days 🔍

Sourcesinfo

Advisory: FEDORA-2024-70ee97033b
Status: Not defined

CVE: CVE-2024-3209 (🔍)
GCVE (CVE): GCVE-0-2024-3209
GCVE (VulDB): GCVE-100-259055
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/02/2024 18:55
Updated: 11/21/2025 07:21
Changes: 04/02/2024 18:55 (55), 05/09/2024 01:20 (3), 05/09/2024 01:28 (18), 06/05/2024 19:45 (8), 04/25/2025 17:07 (12), 11/21/2025 07:21 (2)
Complete: 🔍
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #304575: UPX upx commit 06b0de9c77551cd4e856d453e094d8a0b6ef0d6d heap buffer overflow (by drive.google.com)

Duplicate

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

Discussion

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