Cisco Blogs

Threat Research

  • Vulnerability Spotlight: TALOS-2018-0529-531 – Multiple Vulnerabilities in NASA CFITSIO library

    - April 12, 2018 - 1 Comment

    Vulnerabilities discovered by Tyler Bohan from Talos

    Talos is disclosing three remote code execution vulnerabilities in the NASA CFITSIO library. CFITSIO is a library of C and Fortran subroutines for reading and writing data files in the Flexible Image Transport System (FITS) data format. FITS is a standard format endorsed by both NASA and the International Astronomical Union for astronomical data.

    Specially crafted images parsed via the library can cause a stack-based buffer overflow, overwriting arbitrary data. An attacker can deliver a malicious FIT image to trigger this vulnerability, and potentially gain the ability to execute code.

    <<READ MORE>>

  • Vulnerability Spotlight: Multiple Simple DirectMedia Layer Vulnerabilities

    - April 11, 2018 - 0 Comments

    Discovered by Lilith Wyatt of Cisco Talos


    Talos is disclosing several vulnerabilities identified in Simple DirectMedia Layer’s SDL2_Image library that could allow code execution. Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve’s award winning catalog and many Humble Bundle games. SDL officially supports Windows, Mac OS X, Linux, iOS, and Android. Support for other platforms may be found in the source code. The SDL2_Image library is an optional component for SDL that deals specifically with parsing and displaying a variety of image file formats, creating a single and uniform API for image processing, regardless of the type. The latest SDL version (2.0.8) can be found here.

    Read More here

  • Vulnerability Spotlight: Multiple Computerinsel PhotoLine PSD Code Execution Vulnerabilities

    - April 11, 2018 - 2 Comments

    Discovered by Tyler Bohan of Cisco Talos


    Today, Cisco Talos is disclosing a vulnerability within Computerinsel PhotoLine’s PSD-parsing functionality. Photoline is an image processing tool used to modify and edit images, as well as other graphic-related material. This product has a large user base and is popular in its specific field. The vulnerable component is in the handling of PSD documents. PSD is a document format used by Adobe Photoshop, and is supported by many third-party applications throughout the industry.

    Read More here

  • Microsoft Patch Tuesday – April 2018

    - April 10, 2018 - 0 Comments

    Today, Microsoft has released its monthly set of security advisories for vulnerabilities that have been identified and addressed in various products. This month’s advisory release addresses 68 new vulnerabilities, with 26 of them rated critical, 40 of them rated important and 1 of them rated moderate. These vulnerabilities impact Microsoft Windows, Internet Explorer, Microsoft Edge, Microsoft Office, Windows kernel, Windows Hyper-V, Microsoft Scripting Engine and more.


  • Beers with Talos EP26: Talos is Holding a Conference, and the Evolving Battle at the Edge

    - April 10, 2018 - 0 Comments



    Beers with Talos (BWT) Podcast Episode 26 is now available.  Download this episode and subscribe to Beers with Talos:


    If iTunes and Google Play aren’t your thing:

    EP26 Show Notes:

    Recorded 3/29/18 – Joel is sitting out this week, and Bill Largent from the Outreach team fills in. We are pretty sure he was just running late trying to live on Joel Mean Time which, coincidentally, is now a GitHub project thanks to Moses (link below). We cover a wide range of topics in this episode, so stay with us! We chat about the Talos Threat Research Summit coming in June, we wonder where the carrots to match the sticks in security are, and weigh the value of finding your own damn vulns. The last part of the show starts with discussing GoScanSSH, which ends up being a discussion on the larger battle for the edge.

    >> Read More

  • Critical Infrastructure at Risk: Advanced Actors Target Smart Install Client

    - April 5, 2018 - 0 Comments

    Update: 4/9 Cisco PSIRT has released additional guidance available here.

    Cisco has recently become aware of specific advanced actors targeting Cisco switches by leveraging a protocol misuse issue in the Cisco Smart Install Client. Several incidents in multiple countries, including some specifically targeting critical infrastructure, have involved the misuse of the Smart Install protocol. Some of these attacks are believed to be associated with nation-state actors, such as those described in U.S. CERT’s recent alert. As a result, we are taking an active stance, and are urging customers, again, of the elevated risk and available remediation paths.

    On Feb. 14, 2017, Cisco’s Product Security Incident Response Team (PSIRT) released an advisory detailing active scanning associated with Cisco Smart Install Clients. The Cisco Smart Install Client is a legacy utility designed to allow no-touch installation of new Cisco equipment, specifically Cisco switches. As a response to this activity, Cisco Talos published a blog and released an open-source tool that scans for devices that use the Cisco Smart Install protocol. In addition to the release of the scanning tool, additional coverage has been released for Snort (SID: 41722-41725) to detect any attempts to leverage this type of technology.


  • Vulnerability Spotlight: Natus NeuroWorks Multiple Vulnerabilities

    - April 4, 2018 - 0 Comments

    Vulnerabilities discovered by Cory Duplantis from Talos


    Talos has discovered multiple vulnerabilities in Natus NeuroWorks software. This software is used in the Natus Xltek EEG medical products from Natus Medical Inc. The vulnerable devices contain an ethernet connection for data acquisition and connection to networks.

    We identified a number of vulnerabilities falling into two classes:

    • Four code execution vulnerabilities
    • One denial of service vulnerability.

    The first category allows code execution on the medical device through a specially crafted network packet. The second category can cause the vulnerable service to crash. The vulnerabilities can be triggered remotely without authentication.


  • Vulnerability Spotlight: Moxa AWK-3131A Multiple Features Login Username Parameter OS Command Injection Vulnerability

    - April 3, 2018 - 0 Comments

    This vulnerability is discovered by Patrick DeSantis and Dave McDaniel of Cisco Talos

    Today, Talos is disclosing TALOS-2017-0507 (CVE-2017-14459), a vulnerability that has been identified in Moxa AWK-3131A industrial wireless access point.

    The Moxa AWK-3131A Industrial IEEE 802.11a/b/g/n wireless AP/bridge/client is a wireless networking appliance intended for use in industrial environments. The manufacturer specifically highlights automated materials handling and automated guided vehicles as target markets.

    An exploitable OS Command Injection vulnerability exists in the Telnet login functionality of Moxa AWK-3131A Industrial IEEE 802.11a/b/g/n wireless AP/bridge/client in firmware versions 1.4 and newer. An attacker can inject commands via the username parameter, resulting in remote, unauthenticated, root-level operating system command execution.


  • Fake AV Investigation Unearths KevDroid, New Android Malware

    - April 2, 2018 - 0 Comments

    This blog post is authored by Warren MercerPaul RascagneresVitor Ventura and with contributions from Jungsoo An.


    Several days ago, EST Security published a post concerning a fake antivirus malware targeting the Android mobile platform. In the Korean media, it was mentioned that there could be a link between this Android malware and Group 123. Talos decided to investigate this malware. And due to our reporting and history of following of Group 123, we discovered some interesting elements.

    Talos identified two variants of the Android Remote Administration Tool (RAT). Both samples have the same capabilities — namely to steal information on the compromised device (such as contacts, SMS and phone history) and record the victim’s phone calls. One variant uses a known Android exploit (CVE-2015-3636) in order to get root access on the compromised Android device. The data of both variants was sent using an HTTP POST to a unique command and control (C2) server. The ability to record calls was implemented based on an open-source project available on GitHub. We named this malware “KevDroid.”

    Another RAT (this time targeting Windows) was identified hosted on the command and control server in use by KevDroid. This malware specifically uses the PubNub platform as its C2 server. PubNub is a global data stream network (DSN). The attackers use the PubNub API in order to publish orders to the compromised systems. This behaviour explains why we named it “PubNubRAT.”

    At this time, we cannot identify a link between these samples and the Group 123 sample. We only identified a bundle of tactics, techniques and procedural elements that were too weak to identify a real link.



  • Vulnerability Spotlight: Multiple Vulnerabilities in Allen Bradley MicroLogix 1400 Series Devices

    - March 28, 2018 - 0 Comments

    These vulnerabilities were discovered by Jared Rittle and Patrick DeSantis of Cisco Talos.


    Rockwell Automation Allen-Bradley MicroLogix 1400 Programmable Logic Controllers (PLCs) are marketed for use in a variety of different Industrial Control System (ICS) applications and processes. As such, these devices are often relied upon for the performance of critical process control functions in many different critical infrastructure sectors. Previously, Cisco Talos released details regarding a vulnerability that was present in these devices. Cisco Talos continued analysis of these devices and discovered additional vulnerabilities that could be leveraged to modify device configuration and ladder logic, write modified program data into the device’s memory module, erase program data from the device’s memory module, or conduct Denial of Service (DoS) attacks against affected devices. Depending on the affected PLCs within an industrial control process, this could result in significant damages.