Jingzheng Wu, Zhifei Wu, Mutian Yang, Tianyue Luo, Yanjun Wu, Yongji Wang
Android now has 83 percent of the smartphone market, many vendors benefiting from market growth. It is generally accepted that the world's major vendors have better quality assurance for their products. However, because of the fragmentation of Android platform, the different quality management system and the different ability of developers, the vendor customized Android applications suffer from the quality, reliability and security problems. In this paper, we designed QRS framework to assess the quality of the vendor customized applications. In particular, we defined 7 quality, reliability and security related rules, and reversed all the customized applications of 12 representative Android smartphones. The evaluation results show that even if the world's major vendors still lack of quality assurance, and almost all of the customized applications extracted from the examined smartphones have at least one quality, reliability or security related problem. We suggest the vendors should strictly test the quality of their products.
Henry Carter, Benjamin Mood, Patrick Traynor, Kevin Butler
Secure multiparty computation (SMC) offers a technique to preserve functionality and data privacy in mobile applications. Current protocols that make this costly cryptographic construction feasible on mobile devices securely outsource the bulk of the computation to a cloud provider. However, these outsourcing techniques are built on specific secure computation assumptions and tools, and applying new SMC ideas to the outsourced setting requires the protocols to be completely rebuilt and proven secure. In this work, we develop a generic technique for lifting any secure two-party computation protocol into an outsourced two-party SMC protocol. By augmenting the function being evaluated with auxiliary consistency checks and input values, we can create an outsourced protocol with low overhead cost. Our implementation and evaluation show that in the best case, our outsourcing additions execute within the confidence intervals of two servers running the same computation, and consume approximately the same bandwidth. In addition, the mobile device itself uses minimal bandwidth over a single round of communication. This work demonstrates that efficient outsourcing is possible with any underlying SMC scheme, and provides an outsourcing protocol that is efficient and directly applicable to current and future SMC techniques.
Hong Hu, Zheng Leong Chua, Prateek Saxena, Zhenkai Liang
One way to enhance software security is to isolate important code and data. In such a mechanism, different components/programs are isolated from each other, and access is only provided through limited interfaces. However, the interface still provides attackers with a channel to influence the code being protected, where normal code can be leveraged by attackers to perform arbitrary memory accesses. In this paper, we present a systematic method to detect such dereference under the influence (DUI) vulnerability through binary analysis. Our solution detects DUI and estimates the attackers’ capability that can be obtained through DUI exploits. Our evaluation shows that our approach can accurately identify code vulnerable to DUIs in real-world software components and programs.
Ji-Hyeon Yoon, Hae Young Lee
Although we can hide shellcode in plain text (e.g., English shellcode), due to the signature of its decoder, it can be detected by defensive measures. In this paper, we present an approach to hide shellcode in Unicode encoded Korean text and to reconstruct it based on return-oriented programming. In our approach, shellcode is hidden within Korean text in the form of Chinese characters. By overwriting return addresses on the stack, control flow is directed through existing instructions, so that shellcode is reconstructed and then executed. Our approach is simple, yet it may be effective against payload inspection as well as last branch recording based defensive measures. With some modifications, we may hide shellcode in East Asian text and reconstruct other plain text encoded shellcode without the use of a decoder.
Chen Li, Yu Ding, Tongxin Li, Jun Li, Xinhui Han
IP spoofing has become one of major threats to the Internet, while popular defense methods like ingress/egress filtering cannot stop IP spoofing effectively. This poster introduces SIPD, a feasible and scalable SDN-based IP spoofing defense method, which runs on the SDN controller and is compatible with the OpenFlow specification. It can automatically generate filtering rules and corporate with other SDNs that support SIPD. SIPD enforced SDN can detect all the intra-AS IP spoofing packets and most of the inter-AS IP spoofing packets.
Ben Niu, Gang Tan
Shukun Yang, Shouling Ji, Xin Hu, and Raheem Beyah
We present a novel and comprehensive examination of the effectiveness and soundness of commercial password meters and their impacts on password security. The experiments are backed with a collection of state-of-the-art password cracking algorithms in both academia and industry. We show that some of the popular meters are stunningly inaccurate.
Yue Chen, Yaoqi Jia, Jian Mao, Zhenkai Liang