CVE-2020-26124 : openmediavault before 4.1.36 and 5.x before 5.5.12 allows authenticated PHP code

openmediavault before 4.1.36 and 5.x before 5.5.12 allows authenticated PHP code injection attacks, via the sortfield POST parameter of rpc.php, because json_encode_safe is not used in config/databasebackend.inc. Successful exploitation allows arbitrary command execution on the underlying operating system as root.

Published 2020-10-02 09:15:14

Updated 2022-01-06 14:18:43

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2020-26124

Openmediavault » Openmediavault
Versions from including (>=) 5.0.0 and before (<) 5.5.12
cpe:2.3:a:openmediavault:openmediavault:*:*:*:*:*:*:*:*
Matching versions
Openmediavault » Openmediavault
Versions before (<) 4.1.36
cpe:2.3:a:openmediavault:openmediavault:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2020-26124

EPSS FAQ

80.28%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 99 %

Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2020-26124

OpenMediaVault rpc.php Authenticated PHP Code Injection

Disclosure Date: 2020-09-28

First seen: 2020-11-24

exploit/unix/webapp/openmediavault_rpc_rce

This module exploits an authenticated PHP code injection vulnerability found in openmediavault versions before 4.1.36 and 5.x versions before 5.5.12 inclusive in the "sortfield" POST parameter of the rpc.php page, because "json_encode_safe()" is not

More information

CVSS scores for CVE-2020-26124

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.0	HIGH	AV:N/AC:L/Au:S/C:C/I:C/A:C	8.0	10.0	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
8.8	HIGH	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	2.8	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2020-26124

CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-26124

http://packetstormsecurity.com/files/160223/OpenMediaVault-rpc.php-Authenticated-PHP-Code-Injection.html

OpenMediaVault rpc.php Authenticated PHP Code Injection ≈ Packet Storm
Exploit;Third Party Advisory;VDB Entry
https://www.openmediavault.org/?p=2797

New security updates available | openmediavault
Vendor Advisory
https://github.com/openmediavault/openmediavault/commit/ebb51bbf5a39f4955eab0073bf87f2a31926d85d

Cleanup code, add unit tests. · openmediavault/openmediavault@ebb51bb · GitHub
Patch;Third Party Advisory

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