CiviCRM up to 5.21.2/5.24.2 PHAR Archive unrestricted upload

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in CiviCRM up to 5.21.2/5.24.2 and classified as critical. Impacted is an unknown function of the component PHAR Archive Handler. The manipulation leads to unrestricted upload. This vulnerability is referenced as CVE-2020-36388. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in CiviCRM up to 5.21.2/5.24.2 and classified as critical. This issue affects an unknown part of the component PHAR Archive Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability.

The weakness was published 06/18/2021 as civi-sa-2020-03. It is possible to read the advisory at civicrm.org. The identification of this vulnerability is CVE-2020-36388. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 257981 (Linux Distros Unpatched Vulnerability : CVE-2020-36388), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.21.3 or 5.24.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (257981). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 257981
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2020-36388

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CiviCRM 5.21.3/5.24.3

Timelineinfo

06/17/2021 🔍
06/18/2021 +1 days 🔍
06/18/2021 +0 days 🔍
08/29/2025 +1533 days 🔍

Sourcesinfo

Advisory: civi-sa-2020-03
Status: Confirmed

CVE: CVE-2020-36388 (🔍)
GCVE (CVE): GCVE-0-2020-36388
GCVE (VulDB): GCVE-100-177215

Entryinfo

Created: 06/18/2021 06:26
Updated: 08/29/2025 09:28
Changes: 06/18/2021 06:26 (38), 06/21/2021 14:21 (5), 08/29/2025 09:28 (16)
Complete: 🔍
Cache ID: 216::103

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

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