Breaking

How to break out of restricted shells with tcpdump

During security assessments we sometimes obtain access to a restricted shell on a target system. To advance further and gain complete control of the system, the next step is usually to break out of this shell. If the restricted shell provides access to certain system binaries, these binaries can often be exploited to perform such a break out. Here we would like to show an interesting example of such a break out by using the tcpdump binary. Continue reading “How to break out of restricted shells with tcpdump”

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Events

TROOPERS19 Training Teaser: Windows & Linux Binary Exploitation

Once again Troopers will have its Windows & Linux Binary Exploitation workshop. Its main focus are the ever-present stack-based buffer overflows still found in software today (e.g. CVE-2018-5002, CVE-2018-1459, and CVE-2018-12897) and their differences with regard to exploitation on Windows and Linux systems. If you ever wanted to know the details of the exploit development process for these systems then this workshop is for you. Continue reading “TROOPERS19 Training Teaser: Windows & Linux Binary Exploitation”

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Misc

Security Advisory for VMware vRealize Automation Center

During a recent customer project we identified several vulnerabilities in the VMware vRealize Automation Center such as a DOM-based cross-site scripting and a missing renewal of session tokens during the login. The vulnerabilities have been disclosed to VMware on November 20th, 2017. A security advisory for the vulnerabilities has been made available here on April 12th, 2018. Continue reading “Security Advisory for VMware vRealize Automation Center”

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Breaking

Setting up a Research Environment for IP Cameras

Embedded devices often serve as an entry point for an attack on a private or corporate network. The infamous attack on HackingTeam, for example, followed exactly this path as was revealed here. Although the attack may have been for the greater good (refer also to this great keynote), such incidents demonstrate that it is important to properly secure your embedded devices. In a recent blog post, Niklaus presented how he analyzed the security posture of a MAX! Cube LAN Gateway. Moreover, Brian reported a few weeks ago on the security posture of IoT devices (and in particular on one of his cameras). With this post I would like to share my experiences with analyzing another embedded device: the IC-3116W IP camera by Edimax.  Continue reading “Setting up a Research Environment for IP Cameras”

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Events

25th USENIX Security Symposium & WOOT Workshop

Last month the annual USENIX Security Symposium with its co-located workshops (WOOT, CSET, FOCI, ASE, and HotSec) was held in Austin, Texas. The program of the conference together with the published papers can be found here and information on the workshops can be found here.

The research topics were quite diverse and included subjects such as low-level attacks, cryptographic attacks, and vehicle attacks. To give you an impression on the research that has been presented at the conference, let us discuss some of the talks in the following:

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