UPX 3.95 p_lx_elf.cpp PackLinuxElf::elf_hash calculation

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in UPX 3.95. This affects the function PackLinuxElf::elf_hash of the file p_lx_elf.cpp. Such manipulation leads to calculation. This vulnerability is listed as CVE-2019-20051. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability was found in UPX 3.95 and classified as problematic. Affected by this issue is the function PackLinuxElf::elf_hash of the file p_lx_elf.cpp. The manipulation with an unknown input leads to a calculation vulnerability. Using CWE to declare the problem leads to CWE-682. The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management. Impacted is availability. CVE summarizes:

A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.

The weakness was presented 12/27/2019. This vulnerability is handled as CVE-2019-20051 since 12/27/2019. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

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

See VDB-147850 for similar entry. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

3.95

License

free

Website

Product: https://github.com/upx/upx/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Calculation
CWE: CWE-682
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/27/2019 🔍
12/27/2019 +0 days 🔍
12/28/2019 +1 days 🔍
04/11/2025 +1931 days 🔍

Sourcesinfo

Product: github.com

Advisory: 313
Status: Not defined

CVE: CVE-2019-20051 (🔍)
GCVE (CVE): GCVE-0-2019-20051
GCVE (VulDB): GCVE-100-147848
See also: 🔍

Entryinfo

Created: 12/28/2019 12:05
Updated: 04/11/2025 15:35
Changes: 12/28/2019 12:05 (36), 12/28/2019 12:10 (17), 03/18/2024 08:58 (18), 03/18/2024 08:59 (1), 04/11/2025 15:35 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.