[KIS-2020-02] SuiteCRM <= 7.11.11 Multiple Phar Deserialization Vulnerabilities

[Egidio Romano <research () karmainsecurity com>]

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SuiteCRM <= 7.11.11 Multiple Phar Deserialization Vulnerabilities
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[-] Software Link:

https://suitecrm.com/


[-] Affected Versions:

Version 7.11.11 and prior versions.


[-] Vulnerabilities Description:

1) User input passed through the "backup_dir" parameter when handling 
the "Backups" action
within the "Administration" module is not properly sanitized before 
being used in a file
operation. This can be exploited by malicious users to inject arbitrary 
PHP objects into
the application scope (PHP Object Injection via phar:// stream wrapper), 
allowing them to
carry out a variety of attacks, such as executing arbitrary PHP code. 
Successful
exploitation of this vulnerability requires a System Administrator 
account.

2) User input passed through the "file_name" parameter when handling the 
"step3″ action
within the "Import" module is not properly sanitized before being used 
in a file operation.
This can be exploited by malicious users to inject arbitrary PHP objects 
into the application
scope (PHP Object Injection via phar:// stream wrapper), allowing them 
to carry out a variety
of attacks, such as executing arbitrary PHP code.

3) User input passed through the "load_module_from_dir" parameter when 
handling the
"UpgradeWizard" action within the "Administration" module is not 
properly sanitized before
being used in a file operation. This can be exploited by malicious users 
to inject arbitrary
PHP objects into the application scope (PHP Object Injection via phar:// 
stream wrapper),
allowing them to carry out a variety of attacks, such as executing 
arbitrary PHP code.
Successful exploitation of this vulnerability requires a System 
Administrator account.

4) User input passed through the "file_name" parameter when handling the 
"UploadFileCheck"
action within the "UpgradeWizard" module is not properly sanitized 
before being used in a
file operation. This can be exploited by malicious users to inject 
arbitrary PHP objects
into the application scope (PHP Object Injection via phar:// stream 
wrapper), allowing them
to carry out a variety of attacks, such as executing arbitrary PHP code. 
Successful
exploitation of this vulnerability would require a System Administrator 
account.
However, due to KIS-2020-04 it could be exploited by any user.


[-] Solution:

No official solution is currently available.


[-] Disclosure Timeline:

[19/09/2019] - Vendor notified
[20/09/2019] - Vendor acknowledgement
[12/11/2019] - Vendor contacted again asking for updates, no response
[20/01/2020] - Vendor notified about public disclosure intention, no 
response
[07/02/2020] - CVE number assigned
[12/02/2020] - Public disclosure


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2020-8801 to these vulnerabilities.


[-] Credits:

Vulnerabilities discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2020-02


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