UPX 4.0.0 p_lx_elf.cpp PackLinuxElf::canUnpack null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in UPX 4.0.0 and classified as problematic. This affects the function PackLinuxElf::canUnpack of the file p_lx_elf.cpp. The manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2021-30500. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as problematic has been found in UPX 4.0.0. Affected is the function PackLinuxElf::canUnpack of the file p_lx_elf.cpp. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability.

The weakness was shared 05/27/2021. The advisory is available at github.com. This vulnerability is traded as CVE-2021-30500. Technical details are known, but there is no available exploit.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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: github.com

Timelineinfo

04/12/2021 🔍
05/27/2021 +45 days 🔍
05/27/2021 +0 days 🔍
04/11/2025 +1415 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-30500 (🔍)
GCVE (CVE): GCVE-0-2021-30500
GCVE (VulDB): GCVE-100-175914

Entryinfo

Created: 05/27/2021 10:10
Updated: 04/11/2025 15:35
Changes: 05/27/2021 10:10 (38), 05/30/2021 07:57 (5), 04/11/2025 15:35 (33)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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