伊人直播app官方正版下载_伊人直播高品质美女在线视频互动社区_伊人直播官方版

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5G來了,這些威脅在潛伏……
時(shí)間:2018-12-05 10:59:56
文章發(fā)布:李陽
原創(chuàng)作者:未知
來源:中關(guān)村在線

5G將至,屆時(shí)體驗(yàn)峰值傳輸速率突破1Gbps-10Gbps,延遲低至10ms甚至1ms的移動(dòng)網(wǎng)絡(luò)將成為可能。然而在令人興奮的背后,那些隱藏其中的安全威脅也會(huì)隨之而來,讓人防不勝防。


5G將至,屆時(shí)體驗(yàn)峰值傳輸速率突破1Gbps-10Gbps,延遲低至10ms甚至1ms的移動(dòng)網(wǎng)絡(luò)將成為可能。然而在令人興奮的背后,那些隱藏其中的安全威脅也會(huì)隨之而來,讓人防不勝防。  5G  協(xié)議漏洞最可怕  與3G和4G網(wǎng)絡(luò)一樣,現(xiàn)有的5G也采用一個(gè)被稱為“認(rèn)證和密鑰協(xié)商(AKA)”的協(xié)議來進(jìn)行身份驗(yàn)證,這是一種讓用戶與網(wǎng)絡(luò)相互信任的安全規(guī)范。不過已有安全研究人員指出此協(xié)議在應(yīng)用于5G后至少會(huì)暴露出兩個(gè)主要漏洞。  第一個(gè)漏洞是攻擊者可以利用AKA協(xié)議來定位附近的手機(jī),并加以跟蹤。第二個(gè)漏洞則是易受攻擊的AKA版本可能會(huì)導(dǎo)致一些用戶在使用5G網(wǎng)絡(luò)時(shí)被惡意收費(fèi)。所幸由于5G尚在起步階段,因此及早發(fā)現(xiàn)并能更新5G協(xié)議標(biāo)準(zhǔn)的話,似乎還來得及。  實(shí)際上現(xiàn)在包括LTE在內(nèi)的任何通信協(xié)議,不論其安全體系有多強(qiáng)大,也不論加密算法的復(fù)雜程度有多高,只要存在一個(gè)邊緣威脅情況或不安全功能,整個(gè)系統(tǒng)的安全性都有可能遭受瞬間瓦解。如果打個(gè)比方的話,協(xié)議層面上的漏洞就如同為一棟大樓打地基時(shí),出現(xiàn)了安全隱患一樣,危害嚴(yán)重,影響深遠(yuǎn)。  5G攻擊面將暴增  一份最新的物聯(lián)網(wǎng)分析報(bào)告預(yù)測(cè),到2025年,物聯(lián)網(wǎng)設(shè)備數(shù)量將從目前的70億增加到215億。而暴增的物聯(lián)網(wǎng)設(shè)備將致使攻擊面在5G時(shí)代擴(kuò)張到難以想象的地步。不僅如此,相比3G、4G,作為新一代移動(dòng)網(wǎng)絡(luò)的5G在一些場(chǎng)景下為了獲得高數(shù)據(jù)速率,優(yōu)質(zhì)服務(wù)質(zhì)量和極低的延遲,就要建設(shè)更為密集的基站。  上述種種都讓任務(wù)關(guān)鍵型應(yīng)用程序的接入面變廣,也讓工廠、企業(yè)和公共關(guān)鍵基礎(chǔ)設(shè)施更加依賴5G的數(shù)據(jù)連接,無形中令移動(dòng)網(wǎng)絡(luò)更多的攻擊面暴露在外面。而近年來持續(xù)肆虐的分布式拒絕服務(wù)(DDoS)攻擊,勒索加密劫持和其他安全威脅呈現(xiàn)出指數(shù)級(jí)增長(zhǎng),則是從另一個(gè)角度證實(shí)了5G攻擊面只會(huì)越來越多的問題。可以想象,當(dāng)一些工廠逐步開始使用物聯(lián)網(wǎng)傳感器,并且連接到5G移動(dòng)網(wǎng)絡(luò)時(shí),為DDoS攻擊招募僵尸大軍還會(huì)是個(gè)難事嗎?  旁路攻擊不容小覷  此外,未來應(yīng)對(duì)各種不同場(chǎng)景的5G應(yīng)用,5G會(huì)采用網(wǎng)絡(luò)切片技術(shù),而其中典型切片包括大規(guī)模物聯(lián)網(wǎng)、關(guān)鍵任務(wù)型物聯(lián)網(wǎng)和增強(qiáng)型移動(dòng)寬帶三大類。不過5G切片可能不僅僅是以上三大典型切片,還會(huì)推出為特定服務(wù)定制的不同網(wǎng)絡(luò)切片,甚至是虛擬運(yùn)營(yíng)商自己定義切片。然而不同的切片對(duì)于網(wǎng)絡(luò)可靠性和安全性要求是不一樣的,而且由于同一張物理網(wǎng)絡(luò)上會(huì)共存多個(gè)切片,也更容易遭受旁路攻擊。  注:網(wǎng)絡(luò)切片是指共享網(wǎng)絡(luò)物理資源,為不同應(yīng)用場(chǎng)景切出多個(gè)邏輯上獨(dú)立的虛擬網(wǎng)絡(luò),并由系統(tǒng)管理程序進(jìn)行管理和控制。  那么旁路攻擊是什么?通俗講就是有大路不走而抄小路進(jìn)行攻擊的一種方式。而來自密碼學(xué)的官方定義則指那些可以繞過對(duì)加密算法的繁瑣分析,利用密碼算法的硬件實(shí)現(xiàn)運(yùn)算中泄露的信息,如執(zhí)行時(shí)間、功耗、電磁輻射等,并結(jié)合統(tǒng)計(jì)理論的破解密碼方式。這就像“時(shí)序攻擊”,攻擊者可通過分析加密算法的時(shí)間執(zhí)行來推導(dǎo)出密匙一樣可怕。而借助旁路攻擊,攻擊者也可以通過了解5G“切片1”中虛擬機(jī)中的代碼運(yùn)行規(guī)律,從容推斷出“切片2”內(nèi)代碼運(yùn)行規(guī)律,進(jìn)而向“切片2”發(fā)起攻擊。對(duì)于此種情況,5G切片就需要部署慎密的隔離機(jī)制,尤其是虛擬機(jī)之間的隔離才行了。  結(jié)語  5G發(fā)展已勢(shì)不可擋,然而隨著傳統(tǒng)安全協(xié)議的失效,攻擊面的不斷擴(kuò)大,防不勝防的旁路攻擊等都在5G部署道路上埋下了隱患。而這些隱患如同5G身上的“定時(shí)炸彈”,不知何時(shí)就會(huì)爆炸造成傷害。那么在5G商用來臨之前,究竟能否提前發(fā)現(xiàn)漏洞并開始“拆彈”,這次的“5G試題”可是不簡(jiǎn)單了。-藝源科技


協(xié)議漏洞最可怕


與3G和4G網(wǎng)絡(luò)一樣,現(xiàn)有的5G也采用一個(gè)被稱為“認(rèn)證和密鑰協(xié)商(AKA)”的協(xié)議來進(jìn)行身份驗(yàn)證,這是一種讓用戶與網(wǎng)絡(luò)相互信任的安全規(guī)范。不過已有安全研究人員指出此協(xié)議在應(yīng)用于5G后至少會(huì)暴露出兩個(gè)主要漏洞。


第一個(gè)漏洞是攻擊者可以利用AKA協(xié)議來定位附近的手機(jī),并加以跟蹤。第二個(gè)漏洞則是易受攻擊的AKA版本可能會(huì)導(dǎo)致一些用戶在使用5G網(wǎng)絡(luò)時(shí)被惡意收費(fèi)。所幸由于5G尚在起步階段,因此及早發(fā)現(xiàn)并能更新5G協(xié)議標(biāo)準(zhǔn)的話,似乎還來得及。


實(shí)際上現(xiàn)在包括LTE在內(nèi)的任何通信協(xié)議,不論其安全體系有多強(qiáng)大,也不論加密算法的復(fù)雜程度有多高,只要存在一個(gè)邊緣威脅情況或不安全功能,整個(gè)系統(tǒng)的安全性都有可能遭受瞬間瓦解。如果打個(gè)比方的話,協(xié)議層面上的漏洞就如同為一棟大樓打地基時(shí),出現(xiàn)了安全隱患一樣,危害嚴(yán)重,影響深遠(yuǎn)。


5G攻擊面將暴增


一份很新的物聯(lián)網(wǎng)分析報(bào)告預(yù)測(cè),到2025年,物聯(lián)網(wǎng)設(shè)備數(shù)量將從目前的70億增加到215億。而暴增的物聯(lián)網(wǎng)設(shè)備將致使攻擊面在5G時(shí)代擴(kuò)張到難以想象的地步。不僅如此,相比3G、4G,作為新一代移動(dòng)網(wǎng)絡(luò)的5G在一些場(chǎng)景下為了獲得高數(shù)據(jù)速率,優(yōu)質(zhì)服務(wù)質(zhì)量和極低的延遲,就要建設(shè)更為密集的基站。


上述種種都讓任務(wù)關(guān)鍵型應(yīng)用程序的接入面變廣,也讓工廠、企業(yè)和公共關(guān)鍵基礎(chǔ)設(shè)施更加依賴5G的數(shù)據(jù)連接,無形中令移動(dòng)網(wǎng)絡(luò)更多的攻擊面暴露在外面。而近年來持續(xù)肆虐的分布式拒絕服務(wù)(DDoS)攻擊,勒索加密劫持和其他安全威脅呈現(xiàn)出指數(shù)級(jí)增長(zhǎng),則是從另一個(gè)角度證實(shí)了5G攻擊面只會(huì)越來越多的問題??梢韵胂螅?dāng)一些工廠逐步開始使用物聯(lián)網(wǎng)傳感器,并且連接到5G移動(dòng)網(wǎng)絡(luò)時(shí),為DDoS攻擊招募僵尸大軍還會(huì)是個(gè)難事嗎?


旁路攻擊不容小覷


此外,未來應(yīng)對(duì)各種不同場(chǎng)景的5G應(yīng)用,5G會(huì)采用網(wǎng)絡(luò)切片技術(shù),而其中典型切片包括大規(guī)模物聯(lián)網(wǎng)、關(guān)鍵任務(wù)型物聯(lián)網(wǎng)和增強(qiáng)型移動(dòng)寬帶三大類。不過5G切片可能不僅僅是以上三大典型切片,還會(huì)推出為特定服務(wù)定制的不同網(wǎng)絡(luò)切片,甚至是虛擬運(yùn)營(yíng)商自己定義切片。然而不同的切片對(duì)于網(wǎng)絡(luò)可靠性和安全性要求是不一樣的,而且由于同一張物理網(wǎng)絡(luò)上會(huì)共存多個(gè)切片,也更容易遭受旁路攻擊。


注:網(wǎng)絡(luò)切片是指共享網(wǎng)絡(luò)物理資源,為不同應(yīng)用場(chǎng)景切出多個(gè)邏輯上獨(dú)立的虛擬網(wǎng)絡(luò),并由系統(tǒng)管理程序進(jìn)行管理和控制。


那么旁路攻擊是什么?通俗講就是有大路不走而抄小路進(jìn)行攻擊的一種方式。而來自密碼學(xué)的官方定義則指那些可以繞過對(duì)加密算法的繁瑣分析,利用密碼算法的硬件實(shí)現(xiàn)運(yùn)算中泄露的信息,如執(zhí)行時(shí)間、功耗、電磁輻射等,并結(jié)合統(tǒng)計(jì)理論的破解密碼方式。這就像“時(shí)序攻擊”,攻擊者可通過分析加密算法的時(shí)間執(zhí)行來推導(dǎo)出密匙一樣可怕。而借助旁路攻擊,攻擊者也可以通過了解5G“切片1”中虛擬機(jī)中的代碼運(yùn)行規(guī)律,從容推斷出“切片2”內(nèi)代碼運(yùn)行規(guī)律,進(jìn)而向“切片2”發(fā)起攻擊。對(duì)于此種情況,5G切片就需要部署慎密的隔離機(jī)制,尤其是虛擬機(jī)之間的隔離才行了。


結(jié)語


5G發(fā)展已勢(shì)不可擋,然而隨著傳統(tǒng)安全協(xié)議的失效,攻擊面的不斷擴(kuò)大,防不勝防的旁路攻擊等都在5G部署道路上埋下了隱患。而這些隱患如同5G身上的“定時(shí)炸彈”,不知何時(shí)就會(huì)爆炸造成傷害。那么在5G商用來臨之前,究竟能否提前發(fā)現(xiàn)漏洞并開始“拆彈”,這次的“5G試題”可是不簡(jiǎn)單了。

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