Steam Mobil Ödeme Faturalı 2019

steam mobil ödeme faturalı 2019

OpenSSL CVE-2014-0160 Heartbleed 嚴重漏洞

OpenSSL 今天公告了一個極度嚴重的漏洞（CVE-2014-0160），被稱為「Heartbleed」，而他確實也如同心臟噴出血般嚴重。這個漏洞能讓攻擊者從伺服器記憶體中讀取 64 KB 的資料，利用傳送 heartbeat 的封包給伺服器，在封包中控制變數導致 memcpy 函數複製錯誤的記憶體資料，因而擷取記憶體中可能存在的機敏資料。記憶體中最嚴重可能包含 ssl private key、session cookie、使用者密碼等，因此可能因為這樣的漏洞導致伺服器遭到入侵或取得使用者帳號。詳細的分析可以參閱 existential type crisis : Diagnosis of the OpenSSL Heartbleed Bug

軟體名稱：OpenSSL
影響範圍：1.0.1 至 1.0.1f / 1.0.2-beta ~ 1.0.2-beta1
修復版本：1.0.1g / 1.0.2-beta2
影響系統版本
- Debian Wheezy (stable), OpenSSL 1.0.1e-2+deb7u4
- Ubuntu 12.04.4 LTS, OpenSSL 1.0.1-4ubuntu5.11
- CentOS 6.5, OpenSSL 1.0.1e-15
- Fedora 18, OpenSSL 1.0.1e-4
- OpenBSD 5.3 (OpenSSL 1.0.1c 10 May 2012) and 5.4 (OpenSSL 1.0.1c 10 May 2012)
- FreeBSD 10.0 – OpenSSL 1.0.1e 11 Feb 2013
- NetBSD 5.0.2 (OpenSSL 1.0.1e)
- OpenSUSE 12.2 (OpenSSL 1.0.1c)
影響服務：HTTP、SMTPS、IMAPS、POP3S 等使用 OpenSSL 之服務

OpenSSL 的公告如下：https://www.openssl.org/news/secadv_20140407.txt

A missing bounds check in the handling of the TLS heartbeat extension can be used to reveal up to 64k of memory to a connected client or server. Only 1.0.1 and 1.0.2-beta releases of OpenSSL are affected including 1.0.1f and 1.0.2-beta1.

如何自我檢測？

要如何測試自己的網站有沒有這樣的漏洞呢？可以利用以下的網站或工具直接查詢。

直接輸入 Domain 即可查詢，例如「fbi.gov」。

OpenSSL CVE-2014-0160 Heartbleed 檢測: fbi.gov

使用方法直接執行「python ssltest.py ifttt.com」，或是用「-p」指定特定 SSL 連接埠。畫面上會顯示出記憶體資料，可能內含機敏資料例如 private key、session cookie 等。

OpenSSL CVE-2014-0160 Heartbleed 檢測: ifttt.com

原始碼如下：

使用方法直接執行「perl check-ssl-heartbleed.pl mail.XXXXXX.gov.tw:443」，可在網域名稱後指定特定 SSL 連接埠。

使用說明：

應對措施

如果發現自己的伺服器有這樣的漏洞，該怎麼辦呢？

確認自己的 OpenSSL 版本是否在受害範圍
使用 ssltest.py 檢測工具檢測是否含有漏洞
更新 OpenSSL 至 1.0.1g 或 1.0.2-beta2
重開所有與 OpenSSL 函式庫相關之服務
重新產生 SSL Private Key (因為 Private Key 可能藉由漏洞外洩)
將網站舊憑證撤銷
清除所有目前網頁伺服器上的 Session （因為可能遭到竊取）
必要時更換網站內使用者密碼，或是密切追蹤網站是否有帳號盜用的情況發生

詳細討論與建議可以參考
Heartbleed: What is it and what are options to mitigate it? http://serverfault.com/questions/587329/heartbleed-what-is-it-and-what-are-options-to-mitigate-it

誰會是目標呢？

真的會有攻擊者利用這樣的攻擊手法嗎？目前在烏雲 wooyun平台上已經滿滿的資安研究員開始回報網站含有 OpenSSL 漏洞。也有駭客在嘗試撰寫更有效的攻擊利用程式，想要藉此把平常打不下來的網站一舉攻陷。

怎樣的站台會是重點目標呢？含有會員機制的網站特別如此，例如 Web Mail、社群網站等等。因此不少企業要多注意了，例如全世界最大的社群網站 Facebook、SlideShare、台灣知名電信公司網站、社交平台、網路銀行、NAS，都會在這波的攻擊範圍之內。如果沒有儘速修復，等到更有效的攻擊程式出現，就真的等著失血了。

2018-06-11

技術發布

Hello world!

firmamiz elektrik servis, tesisat ve tadilatlariniz icin profesyonel destek Istanbul Elektrik ustasi, acil elektrikci, nobetci elektrikci, elektrikci ustasi, Internet Arizalari, Guvenlik Kamera Sistemleri, Uydu Anten Montajlari uskudar acil elektrikci Ihtiyaclariniza ve isteklerinize gore guvenlik kamera sistemlerini bulacaksiniz. Akilli eksIksiz setler ve arayuzler, kapi cagrisini televizyon, bilgisayar veya cep telefonu araciligiyla rahatca kabul etmenizi saglar. Boylece her zaman ve her yerde on kapinizda veya apartman kapinizda kimin oldugunu canli olarak gorme firsatiniz olur.
Cesitli erisim kontrol secenekleri size daha fazla guvenlik ve rahatlik sunar. Parmak iziyle basit erisim kontrolu sayesinde artik ev anahtari gerekli degildir. Sahte anahtarlar ve unutulmus ev anahtarlari artik sizin icin sorun degil.
Bir alarm sistemi, guvenlik konseptinizi tamamlar. Size tavsiyelerde bulunuyor ve guvenlikle ilgili tum bilesenleri birbirine baglayan cozumler sunuyoruz. Boylece tamamen guvende hissediyorsunuz.
Duman ve yangin alarmlari dahil guvenlik konseptinizi olusturuyoruz. Kendi guvenliginiz icin.
Bizi arayin!

SmartCleanGarden concept within Biodiversity and NBS promotion will participate to the INOWASIA targets

Wastewater Treatment Plants (#WTP) are an essential aspect of sanitation and water infrastructure. WTPs mission is the collection and treatment of sewage along with purifying and returning the water to the environment. However, there is not enough economic growth to build more WTP capacities and it cannot match the population growth. Only 6% of the countries are efficient in terms of #wastewater treatment and 80% of our wastewaters flows back to nature untreated.

To complement existing infrastructure of WTPs, Constructed Wetlands (#CW) are good technical well-known solutions to treat domestic wastewater. It is a Nature-Based Solution (#NBS) that use natural processes involving #wetland #vegetation, #soils and #biodiversity of fauna, with associated microbial communities to improve water quality through mechanical filtration and biological mineralisation.

#SmartCleanGarden Concept is a cross-disciplinary research project from 2018:

(1) to use the concept of enhanced biodiversity in planted filters to increase their effectiveness in limited surfaces (cities),

(2) to prototype environmental e-sensors for the efficient survey of the biogeochemical processes by IoT and

(3) to use the artificial intelligence to remotely control and manage the safe sewage treatment.

Then, we seek 4 challenges:

Adapt the Constructed Wetland to cities (high-density population)
Improve the Constructed Wetland by biodiversity solutions
Monitor and measure the soil quality with e-sensors and IoT in order to establish proxies for safe use
Improve the Constructed Wetland efficiency with Artificial Intelligence (machine learning)

Visit the website for more info: https://smartcleangarden.org/

INOWASIA is an Erasmus + Capacity Building Higher Education project that promotes a joint action of 11 organisations across 5 countries (Cambodia, Laos, Vietnam, France and Spain) to train a new generation of water professionals in Southeast Asia. More info

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