本文選題：棧保護(hù)機制　切入點：Canary復(fù)用　出處：《北京郵電大學(xué)學(xué)報》2017年S1期 　論文類型：期刊論文

【摘要】：核保護(hù)機制(SSP)是緩解棧緩沖區(qū)溢出漏洞攻擊最有效的安全機制,通過系統(tǒng)生成的隨機數(shù)保證棧不被修改,目前關(guān)于SSP機制的繞過技術(shù)主要是基于暴力破解.為此,揭示了一種可以泄露隨機數(shù)的安全缺陷模型,由于操作系統(tǒng)沒有及時清空死亡棧幀,導(dǎo)致隨機數(shù)可能存在于無效空間,利用此特性的繞過方式被稱為Canary復(fù)用.實驗驗證了這種安全缺陷的可利用性與穩(wěn)定性,基于此特點,提出了兩種有效的解決方案.
[Abstract]:The nuclear protection mechanism (SSP) is the most effective security mechanism to mitigate the stack buffer overflow vulnerability attack. The random number generated by the system ensures that the stack will not be modified. At present, the bypass technology of the SSP mechanism is mainly based on brute force cracking. This paper presents a security defect model that can leak random numbers. Because the operating system does not clear the dead stack frames in time, the random numbers may exist in invalid space. The bypass method using this property is called Canary reuse. The availability and stability of this security defect are verified by experiments. Based on this characteristic, two effective solutions are proposed.
【作者單位】： 江南計算技術(shù)研究所;
【分類號】：TP309
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本文編號：1578179