Dynamic Taint Analysis for Automatic Detection, Analysis,and 分析自动检测，动态污点分析，和.pptVIP

下载本文档

11
0
约6.26千字
约 27页
2018-06-24 发布于四川
举报
版权申诉

Dynamic Taint Analysis for Automatic Detection, Analysis,and 分析自动检测，动态污点分析，和.ppt

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Dynamic Taint Analysis for Automatic Detection, Analysis,and 分析自动检测，动态污点分析，和

Dynamic Taint Analysis for Automatic Detection, Analysis, and Signature Generation of Exploits on Commodity Software Paper by: James Newsome and Dawn Song Network and Distributed Systems Security Symposium (NDSS), Feb 2005. Presented by: Devendra Salvi 03/22/2007 Outline Motivation Dynamic Taint analysis Evaluation Application Review Motivation Worms exploit software vulnerabilities like, buffer overrun and “format string” vulnerability For a new attack, attack signatures should be developed automatically. Motivation (contd.) Attack detectors are Coarse grained detectors Detect anomalous behavior and do not provide detailed information about the vulnerability Fine grained detectors Detect attacks on programs vulnerabilities and hence provide detailed information about the attack Dynamic taint analysis Mark input data as “tainted” Monitor program execution to track how tainted attributes propagate Check when tainted data is used in dangerous ways Dynamic taint analysis TaintCheck performs dynamic taint analysis on a program by running the program in its own emulation environment. Dynamic taint analysis Dynamic taint analysis TaintSeed It marks any data from untrusted sources as “tainted” Each byte of memory has a four-byte shadow memory that stores a pointer to a Taint data structure if that location is tainted, or a NULL pointer if it is not. Dynamic taint analysis TaintTracker It tracks each instruction that manipulates data in order to determine whether the result is tainted. When the result of an instruction is tainted by one of the operands, TaintTracker sets the shadow memory of the result to point to the same Taint data structure as the tainted operand. Dynamic taint analysis TaintAssert It checks whether tainted data is used in ways that its policy defines as illegitimate. Dynamic taint analysis Exploit Analyzer The Exploit Analyzer can provide useful information about how the exploit happened, and what the exploit attempts to do. Dynamic