中心公告
2021/02/18
主旨:
【漏洞預警】VMware vCenter存在安全漏洞(CVE-2021-21972),允許攻擊者遠端執行任意程式碼,請儘速確認並進行更新!)
內容說明:
轉發 國家資安資訊分享與分析中心 NISAC-ANA-202104-0524
研究人員發現VMware vCenter存在安全漏洞(CVE-2021-21972),遠端攻擊者可使用vSphere客戶端軟體(HTML5)藉由埠號443發送特製請求連線,利用此漏洞進而執行任意程式碼。
影響平台:
漏洞影響平台版本如下:
● vCenter Server 7.0版本至7.0U1c版本(不包含)
● vCenter Server 6.7版本至6.7U3l版本(不包含)
● vCenter Server 6.5版本至6.5U3n版本(不包含)
● Cloud Foundation (vCenter Server) 4.0版本至42版本(不包含)
● Cloud Foundation (vCenter Server) 3.0版本3.10.1.2版本(不包含)
建議措施:
VMware官方已發布平台修補版本並提供解決方案,請各機關聯絡設備維護廠商或參考以下網址進行更新:
1.https://www.vmware.com/security/advisories/VMSA-2021-0002.html
2.https://kb.vmware.com/s/article/82374
參考資料:
1.https://www.vmware.com/security/advisories/VMSA-2021-0002.html
2.https://www.ithome.com.tw/news/142930
3.https://blogs.juniper.net/en-us/threat-research/cve-2021-21972-vmware-vcenter-unauthorized-remote-code-execution
2021/02/18
主旨:
內容說明:微軟Windows TCP/IP存在安全漏洞(CVE-2021-24074、CVE-2021-24094及CVE-2021-24086),允許攻擊者遠端執行任意程式碼或造成服務阻斷,請儘速確認並進行更新!
內容說明:
轉發 行政院國家資通安全會報技術服務中心 資安訊息警訊 NISAC-ANA-202102-0902
研究人員發現微軟Windows TCP/IP存在安全漏洞 CVE-2021-24074、CVE-2021-24094及CVE-2021-24086,
可能遭受以下攻擊:
1. 遠端攻擊者可發送特製封包,利用CVE-2021-24074或CVE-2021-24094執行任意程式碼。
2. 遠端攻擊者可發送特製封包,利用CVE-2021-24086造成服務阻斷。
情資分享等級: WHITE(情資內容為可公開揭露之資訊)
影響平台:
受影響之Windows作業系統包含用戶端及伺服器版本,版本如下:
Windows Server, version 20H2 (Server Core Installation)
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 20H2 for x64-based Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 2004 for x64-based Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Windows Server, version 1909 (Server Core installation)
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 1909 for 32-bit Systems
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 (Server Core installation)
Windows Server 2012
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows RT 8.1
Windows 8.1 for x64-based systems
Windows 8.1 for 32-bit systems
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2016 (Server Core installation)
Windows Server 2016
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 for 32-bit Systems
Windows Server 2019 (Server Core installation)
Windows Server 2019
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1803 for ARM64-based Systems
Windows 10 Version 1803 for x64-based Systems
Windows 10 Version 1803 for 32-bit Systems
建議措施:
1.目前微軟官方已針對此漏洞釋出更新程式,請各機關聯絡設備維護廠商或參考以下建議進行更新:
(1).https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24094
(2).https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24074
(3).https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086
2.若無法立即更新,可參考官網公告採取緩解措施,並建議經測試再做調整。
(1)CVE-2021-24074執行官網因應措施中之PowerShell指令,停用IPv4之鬆散來源路由,防止攻擊者進行弱點利用,參考連結如下:https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24074
(2)CVE-2021-24086與CVE-2021-24094執行官網因應措施中之PowerShell指令,於邊界網路設備上停用IPv6分段,防止攻擊者進行弱點利用,參考連結如下:https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24094
參考資料:
1. https://msrc-blog.microsoft.com/2021/02/09/multiple-security-updates-affecting-tcp-ip/
2. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24094
3. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24074
4. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086
5. https://unit42.paloaltonetworks.com/cve-2021-24074-patch-tuesday/
6. https://www.ithome.com.tw/news/142717
2020/11/06
Google Chrome瀏覽器存在安全漏洞(CVE-2020-16009),允許攻擊者遠端執行任意程式碼,請儘速確認並進行更新!
內容說明:轉發 行政院國家資通安全會報技術服務中心 資安訊息警訊 NISAC-ANA-202011-0217
研究人員發現Google Chrome瀏覽器所採用之Java Script V8引擎因實作不當,導致存在可能造成堆積毀損(Heap corruption)之安全漏洞(CVE-2020-16009),攻擊者可藉由誘騙受害者點擊連結,利用此漏洞進而遠端執行任意程式碼。
影響平台:Google Chrome 86.0.4240.181以前版本
建議措施:
請更新Google Chrome瀏覽器至86.0.4240.183以後版本,更新方式如下: 1.開啟瀏覽器,於網址列輸入chrome://settings/help,瀏覽器將執行版本檢查與自動更新 2.點擊「重新啟動」完成更新
參考資料:
1.https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-chrome-os.html
3.https://www.ithome.com.tw/news/140912
4.https://www.cybersecurity-help.cz/vdb/SB2020110305
2020/10/21
惡意程式冒充視訊軟體、瀏覽器為掩護,劫持網銀帳戶
新聞來源:iThome
摘要:
IBM研究人員發現一隻惡意程式利用冒充視訊軟體及瀏覽器的手法,騙過安全軟體偵測,並伺機發動遠端疊加(remote overlay)攻擊以劫持網銀帳戶。
https://www.ithome.com.tw/news/140634
詳情請參閱上方參考連結!
2020/10/16
微軟Windows TCP/IP堆疊存在安全漏洞(CVE-2020-16898),允許攻擊者遠端執行任意程式碼,請儘速確認並進行更新!
內容說明:轉發 行政院國家資通安全會報技術服務中心 資安訊息警訊 NISAC-ANA-202010-0502
研究人員發現微軟Windows TCP/IP堆疊(TCP/IP stack)未能正確處理ICMPv6之路由器公告(Router Advertisement)封包,導致存在安全漏洞(CVE-2020-16898),遠端攻擊者可藉由發送特製的ICMPv6路由器公告封包,利用此漏洞進而執行任意程式碼。
影響平台:
Windows版本如下:
Windows 10 Version 1709 for 32-bit Systems; Windows 10 Version 1709 for ARM64-based Systems;
Windows 10 Version 1709 for x64-based Systems; Windows 10 Version 1803 for 32-bit Systems;
Windows 10 Version 1803 for ARM64-based Systems; Windows 10 Version 1803 for x64-based Systems;
Windows 10 Version 1809 for 32-bit Systems; Windows 10 Version 1809 for ARM64-based Systems;
Windows 10 Version 1809 for x64-based Systems; Windows 10 Version 1903 for 32-bit Systems;
Windows 10 Version 1903 for ARM64-based Systems; Windows 10 Version 1903 for x64-based Systems;
Windows 10 Version 1909 for 32-bit Systems; Windows 10 Version 1909 for ARM64-based Systems;
Windows 10 Version 1909 for x64-based Systems; Windows 10 Version 2004 for 32-bit Systems;
Windows 10 Version 2004 for ARM64-based Systems; Windows 10 Version 2004 for x64-based Systems;
Windows Server 2019; Windows Server 2019 (Server Core installation);
Windows Server, version 1903 (Server Core installation); Windows Server, version 1909 (Server Core installation);
Windows Server, version 2004 (Server Core installation)
建議措施:
1.目前微軟官方已針對此漏洞釋出更新程式,請各機關聯絡設備維護廠商或參考以下建議進行更新:https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898
2.如無法更新,亦可於Windows 1709以上版本環境中,執行「netsh int ipv6 set int *INTERFACENUMBER* rabaseddnsconfig=disable」之PowerShell指令,藉由停用ICMPv6 RDNSS功能,防止攻擊者進行弱點利用。
參考資料:
1. https://portalmsrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898
2. https://vuldb.com/?id.162598