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Vulnerability Details : CVE-2015-2995

The RdsLogsEntry servlet in SysAid Help Desk before 15.2 does not properly check file extensions, which allows remote attackers to upload and execute arbitrary files via a NULL byte after the extension, as demonstrated by a .war%00 file.
Publish Date : 2015-06-08 Last Update Date : 2018-10-09
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- CVSS Scores & Vulnerability Types

CVSS Score
6.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Directory traversal
CWE ID 22

- Products Affected By CVE-2015-2995

# Product Type Vendor Product Version Update Edition Language
1 Application Sysaid Sysaid 15.1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Sysaid Sysaid 1

- References For CVE-2015-2995

http://www.securityfocus.com/bid/75038
BID 75038
http://packetstormsecurity.com/files/132138/SysAid-Help-Desk-14.4-Code-Execution-Denial-Of-Service-Traversal-SQL-Injection.html
http://seclists.org/fulldisclosure/2015/Jun/8
FULLDISC 20150603 [Multiple CVE's]: various critical vulnerabilities in SysAid Help Desk (RCE, file download, DoS, etc)
https://www.sysaid.com/blog/entry/sysaid-15-2-your-voice-your-service-desk CONFIRM
http://www.securityfocus.com/archive/1/535679/100/0/threaded
BUGTRAQ 20150603 [Multiple CVE's]: various critical vulnerabilities in SysAid Help Desk (RCE, file download, DoS, etc)
https://www.exploit-db.com/exploits/37667/
EXPLOIT-DB 37667
http://www.rapid7.com/db/modules/exploit/multi/http/sysaid_rdslogs_file_upload

- Metasploit Modules Related To CVE-2015-2995

SysAid Help Desk 'rdslogs' Arbitrary File Upload
This module exploits a file upload vulnerability in SysAid Help Desk v14.3 and v14.4. The vulnerability exists in the RdsLogsEntry servlet which accepts unauthenticated file uploads and handles zip file contents in an insecure way. By combining both weaknesses, a remote attacker can accomplish remote code execution. Note that this will only work if the target is running Java 6 or 7 up to 7u25, as Java 7u40 and above introduces a protection against null byte injection in file names. This module has been tested successfully on version v14.3.12 b22 and v14.4.32 b25 in Linux. In theory this module also works on Windows, but SysAid seems to bundle Java 7u40 and above with the Windows package which prevents the vulnerability from being exploited.
Module type : exploit Rank : excellent Platforms : Java


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