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ABB HMI Outdated Software Components

ABB HMI Outdated Software Components
Posted Jun 21, 2019
Authored by xen1thLabs

ABB HMI uses outdated software components that are statically linked into the firmware files and service binaries. These components have documented vulnerabilities and should be updated and replaced. It was possible to identify severally outdated OpenSSL (version 0.9.8g) and ABYSS HTTP (version 0.4) server components.

tags | advisory, web, vulnerability
advisories | CVE-2009-3245
MD5 | d9b77c26910ae6df3ac760462ddd0df5

ABB HMI Outdated Software Components

Change Mirror Download
XL-19-006 - ABB HMI Outdated Software Components
========================================================================

Identifiers
-----------
XL-19-006
ABBVU-IAMF-1902001
ABBVU-IAMF-1902010


CVSS Score
----------
7.1 (AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L)


Affected vendor
---------------
ABB (new.abb.com)


Credit
------
xen1thLabs - Software Labs


Vulnerability summary
---------------------
ABB HMI uses outdated software components that are statically linked into the firmware files and service binaries. These components have documented vulnerabilities and should be updated and replaced. It was possible to identify severally outdated OpenSSL (version 0.9.8g) and ABYSS HTTP (version 0.4) server components.


Technical details
-----------------
*OpenSSL*
The HMI Interface is using an outdated version of OpenSSL to implement HTTPS functionality.

As reported in CVE 2009-3245 (CVSS 10.0)penSSL before 0.9.8m does not check for a NULL return value from bn_wexpand function calls in (1) crypto/bn/bn_div.c, (2) crypto/bn/bn_gf2m.c, (3) crypto/ec/ec2_smpl.c, and (4) engines/e_ubsec.c, which has unspecified impact and context-dependent attack vectors.


*ABYSS HTTP*
When accessing resources over HTTP directly, the HTTP server replies with HTTP 401 Unauthorized and discloses its HTTP server details:
```
IDAL - HTTP daemon. Based on ABYSS Web Server ver.0.4 © 2000 Moez Mahfoudh
```
This software component is severely outdated and affected by several known vulnerabilities. The disclosed medium severity vulnerabilities could allow an attacker to cause memory corruption that could be exploited for a Denial-of-Service attack.


Affected systems
----------------
CP620, order code: 1SAP520100R0001, revision index G1 with BSP UN31 V1.76 and prior
CP620, order code: 1SAP520100R4001, revision index G1 with BSP UN31 V1.76 and prior
CP620-WEB, order code: 1SAP520200R0001, revision index G1 with BSP UN31 V1.76 and prior
CP630, order code: 1SAP530100R0001, revision index G1 with BSP UN31 V1.76 and prior
CP630-WEB, order code: 1SAP530200R0001, revision index G1 with BSP UN31 V1.76 and prior
CP635, order code: 1SAP535100R0001, revision index G1 with BSP UN31 V1.76 and prior
CP635, order code: 1SAP535100R5001, revision index G1 with BSP UN31 V1.76 and prior
CP635-B, order code: 1SAP535100R2001, revision index G1 with BSP UN31 V1.76 and prior
CP635-WEB, order code: 1SAP535200R0001, revision index G1 with BSP UN31 V1.76 and prior
CP651, order code: 1SAP551100R0001, revision index B1 with BSP UN30 V1.76 and prior
CP651-WEB, order code: 1SAP551200R0001, revision index A0 with BSP UN30 V1.76 and prior
CP661, order code: 1SAP561100R0001, revision index B1 with BSP UN30 V1.76 and prior
CP661-WEB, order code: 1SAP561200R0001, revision index A0 with BSP UN30 V1.76 and prior
CP665, order code: 1SAP565100R0001, revision index B1 with BSP UN30 V1.76 and prior
CP665-WEB, order code: 1SAP565200R0001, revision index A0 with BSP UN30 V1.76 and prior
CP676, order code: 1SAP576100R0001, revision index B1 with BSP UN30 V1.76 and prior
CP676-WEB, order code: 1SAP576200R0001, revision index A0 with BSP UN30 V1.76 and prior

Solution
--------
ABB claims use of OpenSSL is unaffected, no statement for other Abyss web server:
- ABB CP635 HMI - https://search.abb.com/library/Download.aspx?DocumentID=3ADR010376&LanguageCode=en&DocumentPartId=&Action=Launch
- ABB CP651 HMI - https://search.abb.com/library/Download.aspx?DocumentID=3ADR010402&LanguageCode=en&DocumentPartId=&Action=Launch

Disclosure timeline
-------------------
04/02/2019 - Contacted ABB requesting disclosure coordination
05/02/2019 - Provided vulnerability details
05/06/2019 - Patch available
17/06/2019 - xen1thLabs public disclosure


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