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CVE-2020-20588: n/a in n/a

High
VulnerabilityCVE-2020-20588cvecve-2020-20588n-acwe-434
Published: Thu Dec 15 2022 (12/15/2022, 00:00:00 UTC)
Source: CVE
Vendor/Project: n/a
Product: n/a

Description

File upload vulnerability in function upload in action/Core.class.php in zhimengzhe iBarn 1.5 allows remote attackers to run arbitrary code via avatar upload to index.php.

AI-Powered Analysis

AILast updated: 06/20/2025, 12:47:54 UTC

Technical Analysis

CVE-2020-20588 is a high-severity file upload vulnerability identified in the function 'upload' within the file action/Core.class.php of the zhimengzhe iBarn 1.5 application. This vulnerability allows remote attackers to upload arbitrary files, specifically via the avatar upload functionality accessible through index.php. The core issue stems from improper validation or sanitization of uploaded files, categorized under CWE-434 (Unrestricted Upload of File with Dangerous Type). Exploiting this flaw enables an attacker to execute arbitrary code on the affected system, potentially leading to full system compromise. The CVSS v3.1 score of 8.8 reflects the critical nature of this vulnerability, with an attack vector of network (AV:N), low attack complexity (AC:L), requiring low privileges (PR:L), no user interaction (UI:N), and impacting confidentiality, integrity, and availability at a high level (C:H/I:H/A:H). Although no known exploits have been reported in the wild, the vulnerability's characteristics make it a significant risk if left unpatched. The lack of vendor or product-specific information complicates direct identification of affected deployments, but the presence of this vulnerability in iBarn 1.5 suggests that any organization using this software version is at risk. The vulnerability allows attackers to bypass typical file upload restrictions, upload malicious payloads, and execute them remotely, which can lead to data breaches, service disruption, or further lateral movement within the network.

Potential Impact

For European organizations, the exploitation of CVE-2020-20588 could have severe consequences. Given the ability to execute arbitrary code remotely, attackers could compromise sensitive data, disrupt critical services, or use the compromised systems as footholds for broader attacks. Organizations in sectors such as government, finance, healthcare, and critical infrastructure that may use iBarn or similar vulnerable software could face data confidentiality breaches, loss of data integrity, and prolonged downtime. The high impact on availability could disrupt business operations and services, potentially violating GDPR requirements for data protection and incident reporting. Additionally, the low complexity and no user interaction required for exploitation increase the likelihood of automated attacks, amplifying risk. The absence of known exploits in the wild does not diminish the threat, as the vulnerability is straightforward to exploit once discovered, and attackers may develop exploits targeting European entities, especially those with strategic or high-value assets.

Mitigation Recommendations

Given the absence of official patches or vendor guidance, European organizations should implement multiple layers of mitigation to reduce risk. First, restrict or disable the avatar upload functionality if not essential, or implement strict server-side validation to allow only safe file types and enforce file size limits. Employ robust input validation and sanitization to prevent execution of uploaded files. Use web application firewalls (WAFs) with custom rules to detect and block malicious upload attempts targeting the vulnerable endpoint. Conduct thorough code reviews and penetration testing focused on file upload mechanisms. Isolate the affected application within segmented network zones to limit potential lateral movement. Monitor logs for unusual upload activity or execution of unexpected processes. If possible, upgrade to a newer, secure version of the software or replace it with an alternative solution. Additionally, implement endpoint detection and response (EDR) tools to identify and respond to suspicious behaviors promptly. Finally, maintain regular backups and ensure incident response plans are updated to handle potential compromise scenarios related to this vulnerability.

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Technical Details

Data Version
5.1
Assigner Short Name
mitre
Date Reserved
2020-08-13T00:00:00.000Z
Cisa Enriched
true

Threat ID: 682d984ac4522896dcbf7956

Added to database: 5/21/2025, 9:09:30 AM

Last enriched: 6/20/2025, 12:47:54 PM

Last updated: 7/31/2025, 3:54:35 PM

Views: 9

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