[KIS-2019-09] SugarCRM <= 9.0.1 Multiple Phar Deserialization Vulnerabilities

[Egidio Romano <research () karmainsecurity com>]

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SugarCRM <= 9.0.1 Multiple Phar Deserialization Vulnerabilities
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[-] Software Link:

https://www.sugarcrm.com


[-] Affected Versions:

Version 9.0.1 and prior versions, 8.0.3 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 "importFile" parameter when handling 
the
"RefreshMapping" 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.

4) 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.

5) 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.


[-] Solution:

Upgrade to version 9.0.2, 8.0.4, or later.


[-] Disclosure Timeline:

[07/02/2019] - Vendor notified
[01/10/2019] - Versions 9.0.2 and 8.0.4 released
[10/10/2019] - Publication of this advisory


[-] Credits:

Vulnerabilities discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2019-09


[-] Other References:

https://support.sugarcrm.com/Documentation/Sugar_Versions/9.0/Ent/Sugar_9.0.2_Release_Notes

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