Spiceworks 7.5 TFTP Improper Access Control File Overwrite / Upload
|CVSS Base Score
[+] Credits: John Page AKA HYP3RLINX
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/SPICEWORKS-IMPROPER-ACCESS-CONTROL-FILE-OVERWRITE.txt
[+] ISR: APPARITIONSEC
Spiceworks - 7.5
Provides network inventory and monitoring of all the devices on the network by discovering IP-addressable devices.
It can be configured to provide custom alerts and notifications based on various criteria. it also provides a ticketing system,
a user portal, an integrated knowledge base, and mobile ticket management.
Improper Access Control File Overwrite / Upload
The Spiceworks TFTP Server, as distributed with Spiceworks Inventory 7.5, allows remote attackers to access the Spiceworks "data\configurations"
directory by leveraging the unauthenticated nature of the TFTP service for all clients who can reach UDP port 69. This allows remote attackers to
overwrite files within the Spiceworks configurations directory, if the targeted file name is known or guessed.
Remote attackers who can reach UDP port 69 can also write/upload arbitrary files to the "data\configurations", this can potentially become a
Remote Code Execution vulnerability if for example an executable file e.g. EXE, BAT is dropped, then later accessed and run by an unknowing
References - released April 3, 2017:
1) Install Spiceworks
2) c:\>tftp -i VICTIM-IP PUT someconfig someconfig
3) Original someconfig gets overwritten
Arbitrary file upload
c:\>tftp -i VICTIM-IP PUT Evil.exe Evil.exe
Vendor Notification: March 13, 2017
Sent vendor e.g. POC : March 23, 2017
Request status : March 30, 2017
Vendor reply: "We are still working on this" March 30, 2017
Vendor reply :"Thanks for bringing this to our attention"
and releases basic security note of issue on website : April 3, 2017
April 5, 2017 : Public Disclosure
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
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