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[IT 管理者向け] TLS 1.2 への移行を推奨しています

こんにちは、垣内由梨香です データを暗号化し安全にやり取りを行う Transport Layer Security (TLS)。TLS は利用しているが、詳細なバージョンまでは把握してない、そんな方も多いのではないでしょうか?暗号プロトコルは「使ってさえいれば安全」ではありません。現在の脅威に対応できるバージョンのみを利用しリスクを下げることが重要です。 マイクロソフトでは、より安全な TLS 1.2 へ移行していくことを推奨しています。 ** [2020/9/7 追記] 各製品、サービスにおける TLS 1.0/1.1 の廃止予定については、次の情報を参考にしてください。 TLS 1.0 and 1.1 deprecation https://techcommunity.microsoft.com/t5/microsoft-sharepoint-blog/tls-1-0-and-1-1-deprecation/ba-p/1620264

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#microsoft#ssl
CVE-2017-2845: TALOS-2017-0347 || Cisco Talos Intelligence Group

An exploitable command injection vulnerability exists in the web management interface used by the Foscam C1 Indoor HD Camera running application firmware 2.52.2.37. A specially crafted HTTP request can allow for a user to inject arbitrary shell characters during the SMTP configuration tests resulting in command execution

CVE-2017-2844: TALOS-2017-0346 || Cisco Talos Intelligence Group

In the web management interface in Foscam C1 Indoor HD cameras with application firmware 2.52.2.37, a specially crafted HTTP request can allow for a user to inject arbitrary data in the "msmtprc" configuration file resulting in command execution. An attacker can simply send an HTTP request to the device to trigger this vulnerability.

CVE-2017-2850: TALOS-2017-0352 || Cisco Talos Intelligence Group

In the web management interface in Foscam C1 Indoor HD cameras with application firmware 2.52.2.37, a specially crafted HTTP request can allow for a user to inject arbitrary characters in the pureftpd.passwd file during a username change, which in turn allows for bypassing chroot restrictions in the FTP server. An attacker can simply send an HTTP request to the device to trigger this vulnerability.

CVE-2017-2843: TALOS-2017-0345 || Cisco Talos Intelligence Group

In the web management interface in Foscam C1 Indoor HD Camera running application firmware 2.52.2.37, a specially crafted HTTP request can allow for a user to inject arbitrary data in the "msmtprc" configuration file resulting in command execution. An attacker can simply send an HTTP request to the device to trigger this vulnerability.

CVE-2017-2842: TALOS-2017-0344 || Cisco Talos Intelligence Group

In the web management interface in Foscam C1 Indoor HD Camera running application firmware 2.52.2.37, a specially crafted HTTP request can allow for a user to inject arbitrary data in the "msmtprc" configuration file resulting in command execution. An attacker can simply send an HTTP request to the device to trigger this vulnerability.

CVE-2017-2841: TALOS-2017-0343 || Cisco Talos Intelligence Group

An exploitable command injection vulnerability exists in the web management interface used by the Foscam C1 Indoor HD Camera running application firmware 2.52.2.37. A specially crafted HTTP request can allow for a user to inject arbitrary data in the "msmtprc" configuration file resulting in command execution. An attacker can simply send an HTTP request to the device to trigger this vulnerability.

CVE-2017-2781: TALOS-2017-0277 || Cisco Talos Intelligence Group

An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially crafted x509 certificate can cause a buffer overflow on the heap resulting in remote code execution. To trigger this vulnerability, a specially crafted x509 certificate must be presented to the vulnerable client or server application when initiating secure connection.

CVE-2017-2780: TALOS-2017-0276 || Cisco Talos Intelligence Group

An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially crafted x509 certificate can cause a buffer overflow on the heap resulting in remote code execution. To trigger this vulnerability, a specially crafted x509 certificate must be presented to the vulnerable client or server application when initiating secure connection.

CVE-2017-1000376

libffi requests an executable stack allowing attackers to more easily trigger arbitrary code execution by overwriting the stack. Please note that libffi is used by a number of other libraries. It was previously stated that this affects libffi version 3.2.1 but this appears to be incorrect. libffi prior to version 3.1 on 32 bit x86 systems was vulnerable, and upstream is believed to have fixed this issue in version 3.1.