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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.1174 Panasonic FPWIN Pro Vulnerabilities 12 May 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Panasonic FPWIN Pro Publisher: ICS-CERT Operating System: Windows Impact/Access: Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2016-4499 CVE-2016-4498 CVE-2016-4497 CVE-2016-4496 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-16-131-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-16-131-01) Panasonic FPWIN Pro Vulnerabilities Original release date: May 10, 2016 Legal Notice All information products included in http://ics-cert.us-cert.gov are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see http://www.us-cert.gov/tlp/. OVERVIEW NCCIC/ICS-CERT received a report from Trend Micro's Zero Day Initiative (ZDI) concerning buffer overflow vulnerabilities in Panasonic FPWIN Pro software. These vulnerabilities were reported to ZDI by security researcher Steven Seeley. Panasonic has produced a new version to mitigate these vulnerabilities. AFFECTED PRODUCTS Panasonic reports that these vulnerabilities affect the following products: FPWIN Pro version 5.x, FPWIN Pro version 6.x, and FPWIN Pro version 7.122 and prior. Software releases 5.x have reached end-of-support, and users are advised to migrate to a supported release. Software releases 6.x are end-of-sales since April 2015 and will reach end-of-support in September 2016. Users using 6.x releases are advised to plan for an upgrade to the supported software release. IMPACT Reading malformed project file can crash Panasonic FPWIN Pro application. Vulnerabilities do not have direct impact on the system controlled by Panasonic FPWIN Pro application. Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. BACKGROUND Panasonic Electric Works Europe AG is a Panasonic company developing automation products and industrial solutions. The affected product, FPWIN Pro, is programming software for all FP Series PLCs. According to Panasonic, FPWIN Pro is deployed across several sectors including Commercial Facilities, Critical Manufacturing, and Food and Agriculture. Panasonic estimates that these products are used primarily in Europe, North America, and Asia. VULNERABILITY CHARACTERIZATION VULNERABILITY OVERVIEW HEAP-BASED BUFFER OVERFLOW[a] There are multiple ways an attacker can overwrite portions of the heap, which may cause the program to crash. CVE-2016-4499[b] has been assigned to this vulnerability. A CVSS v3 base score of 4.2 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L).[c] ACCESS OF UNINITIALIZED POINTER[d] The program accesses a pointer that has not been initialized. CVE-2016-4498[e] has been assigned to this vulnerability. A CVSS v3 base score of 4.2 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L).[f] OUT-OF-BOUNDS WRITE[g] An attacker can use an index value or an integer overflow to force the program to write outside the bounds of an array. CVE-2016-4496[h] has been assigned to this vulnerability. A CVSS v3 base score of 4.2 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L).[i] TYPE CONFUSION[j] The program allocates or initializes a resource; such as a pointer, object, or variable; using one type, but it later accesses that resource using a type that is incompatible with the original type. CVE-2016-4497[k] has been assigned to this vulnerability. A CVSS v3 base score of 4.2 has been calculated; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L).[l] VULNERABILITY DETAILS EXPLOITABILITY These vulnerabilities are not exploitable remotely and cannot be exploited without user interaction. The exploit is only triggered when a local user runs the vulnerable application and loads the malformed project file. EXISTENCE OF EXPLOIT No known public exploits specifically target these vulnerabilities. DIFFICULTY Crafting a working exploit for these vulnerabilities would be difficult. Social engineering is required to convince the user to accept the malformed project file. Additional user interaction is needed to load the malformed file. This decreases the likelihood of a successful exploit. MITIGATION Panasonic has released FPWIN Pro 7.130 software that addresses the vulnerabilities described in this advisory. Fixed software can be downloaded from https://www.panasonic-electric-works.com/eu/plc-software-control-fpwin-pro.htm Panasonic states that users may only install, use, and expect support for software versions and feature sets for which they have purchased a license. For more information about these issues or other vulnerabilities in Panasonic products, please contact the Panasonic Product Security Incident Response Team: https://www.panasonic.com/global/corporate/product-security/sec/psirt.html ICS-CERT recommends, as quality assurance, that users test the update in a test development environment that reflects their production environment prior to installation. In addition, users should: Do not click web links or open unsolicited attachments in email messages. Refer to Recognizing and Avoiding Email Scams[m] for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks[n] for more information on social engineering attacks ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page at: http://ics-cert.us-cert.gov/content/recommended-practices. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. Additional mitigation guidance and recommended practices are publicly available in the ICS-CERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site (http://ics-cert.us-cert.gov/). Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. a. CWE-122: Heap-based Buffer Overflow, http://cwe.mitre.org/data/definitions/122.html, web site last accessed May 10, 2016. b. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4499, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. c. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S..., web site last accessed May 10, 2016. d. CWE-824: Access of Uninitialized Pointer, http://cwe.mitre.org/data/definitions/824.html, web site last accessed May 10, 2016. e. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4498, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. f. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S..., web site last accessed May 10, 2016. g. CWE-787: Out-of-bounds Write, http://cwe.mitre.org/data/definitions/787.html, web site last accessed May 10, 2016. h. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4496, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. i. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S..., web site last accessed May 10, 2016. j. CWE-843: Access of Resource Using Incompatible Type ('Type Confusion'), http://cwe.mitre.org/data/definitions/843.html, web site last accessed May 10, 2016. k. NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4497, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. l. CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S..., web site last accessed May 10, 2016. m. Recognizing and Avoiding Email Scams, http://www.us-cert.gov/reading_room/emailscams_0905.pdf, web site last accessed May 10, 2016. n. National Cyber Alert System Cyber Security Tip ST04-014, http://www.us-cert.gov/cas/tips/ST04-014.html, web site last accessed May 10, 2016. Contact Information For any questions related to this report, please contact ICS-CERT at: Email: ics-cert@hq.dhs.gov Toll Free: 1-877-776-7585 International Callers: (208) 526-0900 For industrial control systems security information and incident reporting: http://ics-cert.us-cert.gov ICS-CERT continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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