rConfig up to 3.94 ajaxAddTemplate.php fileName os command injection

Summaryinfo

A vulnerability labeled as critical has been found in rConfig up to 3.94. This vulnerability affects unknown code in the library lib/ajaxHandlers/ajaxAddTemplate.php. Executing a manipulation of the argument fileName as part of Shell Metacharacter can lead to os command injection. This vulnerability is registered as CVE-2020-10221. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in rConfig up to 3.94. It has been declared as critical. This vulnerability affects an unknown part in the library lib/ajaxHandlers/ajaxAddTemplate.php. The manipulation of the argument fileName as part of a Shell Metacharacter leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

lib/ajaxHandlers/ajaxAddTemplate.php in rConfig through 3.94 allows remote attackers to execute arbitrary OS commands via shell metacharacters in the fileName POST parameter.

The weakness was published 03/08/2020. This vulnerability was named CVE-2020-10221 since 03/08/2020. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is necessary for exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

It is possible to download the exploit at exploit-db.com. It is declared as attacked. By approaching the search of inurl:lib/ajaxHandlers/ajaxAddTemplate.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 277601 (rConfig RCE (CVE-2020-10221)), which helps to determine the existence of the flaw in a target environment. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 05/03/2022:

Apply updates per vendor instructions.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (48207) and Tenable (277601). Similar entry is available at VDB-150999. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• rConfig

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31
• 3.32
• 3.33
• 3.34
• 3.35
• 3.36
• 3.37
• 3.38
• 3.39
• 3.40
• 3.41
• 3.42
• 3.43
• 3.44
• 3.45
• 3.46
• 3.47
• 3.48
• 3.49
• 3.50
• 3.51
• 3.52
• 3.53
• 3.54
• 3.55
• 3.56
• 3.57
• 3.58
• 3.59
• 3.60
• 3.61
• 3.62
• 3.63
• 3.64
• 3.65
• 3.66
• 3.67
• 3.68
• 3.69
• 3.70
• 3.71
• 3.72
• 3.73
• 3.74
• 3.75
• 3.76
• 3.77
• 3.78
• 3.79
• 3.80
• 3.81
• 3.82
• 3.83
• 3.84
• 3.85
• 3.86
• 3.87
• 3.88
• 3.89
• 3.90
• 3.91
• 3.92
• 3.93
• 3.94

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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