Exploitalert - Database of Exploits

Express Invoice 7.12 Customer Persistent Cross-Site Scripting

CVE	Category	Price	Severity
	CWE-79	$500	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2019-10-17

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	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.
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	Low	C	There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity	Low	I	Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the 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.

https://cxsecurity.com/ascii/WLB-2019100119

Express Invoice 7.12 Customer Persistent Cross-Site Scripting

# Exploit Title: Express Invoice 7.12 - 'Customer' Persistent Cross-Site Scripting # Exploit Author: Debashis Pal # Date: 2019-10-13 # Vendor Homepage: https://www.nchsoftware.com/ # Source: https://www.nchsoftware.com/invoice/index.html # Version: Express Invoice v7.12 # CVE : N/A # Tested on: Windows 7 SP1(32bit) # About Express Invoice v7.12 ============================== Express Invoice lets you create invoices you can print, email or fax directly to clients for faster payment. # Vulnerability ================ Persistent Cross site scripting (XSS). # PoC ====== 1. Login as authenticated unprivileged user to Express Invoice version 7.12 web enable service i.e http://A.B.C.D:96 [Default installation]. 2. Under "Invoices" Invoices List -> View Invoices -> Add New Invoice -> Customer: Field put </script><script>alert('XSS');</script> Save the change. or Under "Items" Items -> Add new item-> Item field: put </script><script>alert('XSS');</script> Save the change. or Under "Customers" Customers -> Add New Customer -> Customer Name: put </script><script>alert('XSS');</script> Save the change. or Under "Quotes" Quotes -> View Quotes -> Add New Quote -> Customer: put </script><script>alert('XSS');</script> Save the change. 3. Login in authenticated privileged or unprivileged user to Express Invoice v7.12 web enable service and visit any of Invoices/Items/Customers/Quotes section, Persistent XSS payload will execute. # Disclosure Timeline ====================== Vulnerability Discover Date: 12-Sep-2019. Vulnerability notification to vendor via vendor provided web form: 12-Sep-2019 ,13-Sep-2019, 19-Sep-2019, 26-Sep-2019, no responds. Submit exploit-db : 14-Oct-2019. # Disclaimer ============= The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. 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.

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