ID | 60101 |
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Author |
Yamauchi, Toshihiro
Graduate School of Natural Science and Technology, Okayama University
ORCID
Kaken ID
publons
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Akao, Yohei
Graduate School of Natural Science and Technology, Okayama University. NTT Communications Corporation
Yoshitani, Ryota
raduate School of Natural Science and Technology, Okayama University
Nakamura, Yuichi
Hitachi Ltd.
Hashimoto, Masaki
Graduate School of Information Security, Institute of Information Security
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Abstract | Cyberattacks, especially attacks that exploit operating system vulnerabilities, have been increasing in recent years. In particular, if administrator privileges are acquired by an attacker through a privilege escalation attack, the attacker can operate the entire system and cause serious damage. In this paper, we propose an additional kernel observer (AKO) that prevents privilege escalation attacks that exploit operating system vulnerabilities. We focus on the fact that a process privilege can be changed only by specific system calls. AKO monitors privilege information changes during system call processing. If AKO detects a privilege change after system call processing, whereby the invoked system call does not originally change the process privilege, AKO regards the change as a privilege escalation attack and applies countermeasures against it. AKO can therefore prevent privilege escalation attacks. Introducing the proposed method in advance can prevent this type of attack by changing any process privilege that was not originally changed in a system call, regardless of the vulnerability type. In this paper, we describe the design and implementation of AKO for Linux x86 64-bit. Moreover, we show that AKO can be expanded to prevent the falsification of various data in the kernel space. Then, we present an expansion example that prevents the invalidation of Security-Enhanced Linux. Finally, our evaluation results show that AKO is effective against privilege escalation attacks, while maintaining low overhead.
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Keywords | Privilege escalation attack prevention
Operating system
Linux kernel vulnerabilities
Non-control-data attack
System security
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Published Date | 2020-06-25
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Publication Title |
International Journal of Information Security
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Volume | volume20
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Publisher | Springer
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Start Page | 461
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End Page | 473
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ISSN | 1615-5262
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NCID | AA11872752
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | c Toshihiro Yamauchi et al
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File Version | publisher
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DOI | |
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Related Url | isVersionOf https://doi.org/10.1007/s10207-020-00514-7
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License | http://creativecommons.org/licenses/by/4.0/
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Funder Name |
Ministry of Education, Culture, Sports, Science and Technology
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助成番号 | JP19H04109
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