OpenMediaVault up to 4.1.35/5.5.11 rpc.php json_encode_safe sortfield code injection

Summaryinfo

A vulnerability classified as critical was found in OpenMediaVault up to 4.1.35/5.5.11. This impacts the function json_encode_safe of the file rpc.php. The manipulation of the argument sortfield as part of POST Parameter results in code injection. This vulnerability is cataloged as CVE-2020-26124. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in OpenMediaVault up to 4.1.35/5.5.11. It has been classified as critical. Affected is the function json_encode_safe of the file rpc.php. The manipulation of the argument sortfield as part of a POST Parameter leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared 10/02/2020 (Website). The advisory is shared for download at openmediavault.org. This vulnerability is traded as CVE-2020-26124 since 09/28/2020. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.

By approaching the search of inurl:rpc.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.1.36 or 5.5.12 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• OpenMediaVault

Version

• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.1.8
• 4.1.9
• 4.1.10
• 4.1.11
• 4.1.12
• 4.1.13
• 4.1.14
• 4.1.15
• 4.1.16
• 4.1.17
• 4.1.18
• 4.1.19
• 4.1.20
• 4.1.21
• 4.1.22
• 4.1.23
• 4.1.24
• 4.1.25
• 4.1.26
• 4.1.27
• 4.1.28
• 4.1.29
• 4.1.30
• 4.1.31
• 4.1.32
• 4.1.33
• 4.1.34
• 4.1.35
• 5.5.0
• 5.5.1
• 5.5.2
• 5.5.3
• 5.5.4
• 5.5.5
• 5.5.6
• 5.5.7
• 5.5.8
• 5.5.9
• 5.5.10
• 5.5.11

CPE 2.3info

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CPE 2.2info

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