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Cisco discloses arbitrary execution in SD-WAN Solution and Webex

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Cisco has disclosed a critical vulnerability in its SD-WAN Solution that allows for arbitrary code execution as the root user.

Improper bounds checking by the vContainer allowed for potential authenticated attackers to send malicious files to an affected instance, which can cause a buffer overflow on the vContainer and create a situation for arbitrary code execution as root, the company said in its advisory.

Cisco vSmart Controllers running a SD-WAN Solution release prior to 18.4.0 were hit, the company said, with only vContainers being affected.

“The fixed software must be deployed by Cisco at the request of the customer. There is no fixed software for Cisco customers to download and deploy for this vulnerability,” the company said.

“Customers must engage their Cisco support contact to ensure the deployment of the latest software fix.”

The company said it is not aware of any exploitation, and the vulnerability was found during internal testing.

Also found via internal testing was another SD-WAN bug that allowed an authenticated, adjacent attacker to bypass authentication and access other vSmart containers.

“The vulnerability is due to an insecure default configuration of the affected system,” Cisco’s advisory said.

“An attacker could exploit this vulnerability by directly connecting to the exposed services. An exploit could allow the attacker to retrieve and modify critical system files.”

Internal testing by Cisco also found a user group configuration bug that would give privilege escalation to an attacker, allowing them to become root and control a box.

“The vulnerability is due to a failure to properly validate certain parameters included within the group configuration,” the advisory said.

“An attacker could exploit this vulnerability by writing a crafted file to the directory where the user group configuration is located in the underlying operating system. ”

In this case, the affected products include the: vBond Orchestrator; vEdge 100, 1000, 2000, 5000 series routers; vEdge Cloud Router Platform; vManage Network Management Software; and vSmart Controller.

The same class of hardware was also hit by an arbitrary file overwrite vulnerability due to improper validation of the save command used on the command line.

“A successful exploit could allow the attacker to overwrite arbitrary files on the underlying operating system of an affected device and escalate their privileges to the root user,” Cisco said.

Cisco said both issues were fixed in SD-WAN Solution Release 18.4.0.

On the Webex front, Trend Micro’s Zero Day Initiative discovered a vulnerability that allowed for arbitrary command execution within the Webex Teams client.

“This vulnerability is due to unsafe search paths used by the application URI that is defined in Windows operating systems,” Cisco said in its advisory.

“An attacker could exploit this vulnerability by convincing a targeted user to follow a malicious link. Successful exploitation could cause the application to load libraries from the directory targeted by the URI link.”

SEE: Cybersecurity in an IoT and mobile world (ZDNet special report) | Download the report as a PDF (TechRepublic)

The result of the vulnerability was an attacker could run commands with the same privileges as the targeted user.

The vulnerability impacts all versions of Cisco Webex Teams earlier than version 3.0.10260 released in November.

Putting a number of vulnerabilities for the Windows version of Webex into a single advisory, Cisco revealed an attacker could use malicious recording (ARF/WRF) files to execute code once a user opened them.

The networking giant said it has released fixed versions of its Webex Player and Webex Network Recording Player that were impacted.

The vulnerabilities in this instance were found by the Zero Day Initiative and researchers at Fortinet.

Among the dozen vulnerabilities classified as high status by Cisco were a pair of vulnerabilities in the web management interface of Cisco Small Business RV320 and RV325 routers that would allow a remote attacker to retrieve files off the device due to improper access controls, and for an attacker to gain administrative privileges to execute commands as root.

Over the course of 2018, Cisco removed seven hard-coded account credentials that gave root or default user privileges from its products.

Earlier this month, Cisco warned that its AsyncOS used in email security appliances were vulnerable to permanent denial of service as its software did not validate S/MIME-signed emails correctly.

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Managing Vulnerabilities in a Cloud Native World

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This free 1-hour webinar from GigaOm Research brings together experts in Cloud Native Vulnerability Management, featuring analyst Iben Rodriguez and special guest from Palo Alto Networks, John Morello. The discussion will focus on optimizing cloud security posture and integration with enterprise tool sets.

We will review platforms delivering Security Posture Management and Workload Protection for Microservice based and Hybrid Cloud Workloads.

Registrants will learn how new customers can benefit from Prisma Cloud to better secure their complex multi-cloud environments. Existing customers will learn about new features they can take advantage of and how to optimize their limited resources.

Register now to join GigaOm and Palo Alto Networks for this free expert webinar.

The post Managing Vulnerabilities in a Cloud Native World appeared first on Gigaom.

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Security Tools Help Bring Dev and Security Teams Together

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Software development teams are increasingly focused on identifying and mitigating any issues as quickly and completely as possible. This relates not only to software quality but also software security. Different organizations are at different levels when it comes to having their development teams and security teams working in concert, but the simple fact remains that there are far more developers out there than security engineers.

Those factors are leading organizations to consider security tooling and automation to proactively discover and resolve any software security issues throughout the development process. In the recent report, “GigaOm Radar for Developer Security Tools,” Shea Stewart examines a roundup of security tools aimed at software development teams.

Stewart identified three critical criteria to bear in mind when evaluating developer security tools. These include:

  • Vendors providing tools to improve application security can and should also enhance an organization’s overall security posture.
  • The prevailing “shift-left” mindset doesn’t necessarily mean the responsibility for reducing risk should shift to development, but instead focusing on security earlier in the process and continuing to do so throughout the development process will reduce risk and the need for extensive rework.
  • Security throughout the entire software development lifecycle (SDLC) is critical for any organization focused on reducing risk.

Figure 1. How Cybersecurity Applies Across Each Stage of the Software Development Lifecycle *Note: This report focuses only on the Developer Security Tooling area

Individual vendors have made varying levels of progress and innovation toward enhancing developer security. Following several acquisitions, Red Hat, Palo Alto Networks, and Rapid7 have all added tooling for developer security to their platforms. Stewart sees a couple of the smaller vendors like JFrog and Sonatype as continuing to innovate to remain ahead of the market.

Vendors delving into this category and moving deeper into “DevSecOps” all seem to be taking different approaches to their enhanced security tooling. While they are involving security in every aspect of the development process, some tend to be moving more quickly to match the pace of the SDLC. Others are trying to shore up existing platforms by adding functionality through acquisition. Both infrastructure and software developers are now sharing toolsets and processes, so these development security tools must account for the requirements of both groups.

While none of the 12 vendors evaluated in this report can provide comprehensive security throughout the entire SDLC, they all have their particular strengths and areas of focus. It is therefore incumbent upon the organization to fully and accurately assess its SDLC, involve the development and security teams, and match the unique requirements with the functionality provided by these tools. Even if it involves using more than one at different points throughout the process, focus on striking a balance between stringent security and simplifying the development process.

Read more: Key Criteria for Evaluating Developer Security Tools, and the Gigaom Radar for Developer Security Tool Companies.

The post Security Tools Help Bring Dev and Security Teams Together appeared first on Gigaom.

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Key Criteria for Evaluating User and Entity Behavior Analytics (UEBA)

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Cybersecurity is a multidisciplinary practice that not only grows in complexity annually but evolves nearly as quickly. A survey of the security landscape today would reveal concerns ranging from the classic compromised servers to the relatively new DevSecOps practices aimed at securing the rapid deployment of new code and infrastructure. However, some things remain constant no matter how much change is introduced. While technology evolves and complexity varies, there is almost always a human component in
risks presented to an organization.

User Behavior Analysis (UBA) was designed to analyze the actions of users in an organization and attempt to identify normal and abnormal behaviors. From this analysis, malicious or risky behaviors can be detected. UBA solutions identify events that are not detectable using other methods because, unlike classic security tools (an IDS or SIEM for example), UBA does not simply pattern match or apply rule sets to data to identify security events. Instead, it looks for any and all deviations from baseline user activity.

As technology advanced and evolved, and the scope of what is connected to the network grew, the need to analyze entities other than users emerged. In response, entity analysis has been added to UBA to create UEBA or User and Entity Behavior Analysis. The strategy remains the same, but the scope of analysis has expanded to include entities involving things like daemons, processes, infrastructure, and so on.

How to Read this Report

This GigaOm report is one of a series of documents that helps IT organizations assess competing solutions in the context of well-defined features and criteria. For a fuller understanding consider reviewing the following reports:

Key Criteria report: A detailed market sector analysis that assesses the impact that key product features and criteria have on top-line solution characteristics—such as scalability, performance, and TCO—that drive purchase decisions.

GigaOm Radar report: A forward-looking analysis that plots the relative value and progression of vendor solutions along multiple axes based on strategy and execution. The Radar report includes a breakdown of each vendor’s offering in the sector.

Solution Profile: An in-depth vendor analysis that builds on the framework developed in the Key Criteria and Radar reports to assess a company’s engagement within a technology sector. This analysis includes forward-looking guidance around both strategy and product.

The post Key Criteria for Evaluating User and Entity Behavior Analytics (UEBA) appeared first on Gigaom.

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