doğum sonrası izin hesaplama / Sükan arxasında ölüm rəqsi - Cars Azerbaijan

Doğum Sonrası Izin Hesaplama

doğum sonrası izin hesaplama

Azerbaycanda türk-islam kültürü

Collection of gold jewelry found during archeological excavations in Azerbaijan is an essential source for study of historical culture and socioeconomical level not only for the developments in Azerbaijan but also neighboring countries for more than four thousand years. Noteworthy, the study of unique designs and decorative techniques for applying fine gold jewelry by various processes, used technology pertaining to the earliest period, addresses the question related to origin and development of jewelry art in Azerbaijan. This article aims to present the study of jewelry art history that emerged in complex executable filigree and granulation techniques, based upon archeological artifacts. This article examines the oldest examples of gold jewelry found in archeological sites of Azerbaijan concerning the 2nd and 1st millenniums BC. Furthermore, the paper presents the outcomes of the study achieved in filigree and grain techniques. Museum pieces allow us to trace the emergence and development of chronological sequence of jewelry grain producing. According to the studies, the earliest filigree decorative techniques for applying jewelry that emerged in the Middle Bronze age (2nd millenniums BC.). The unique item pertaining to the 2nd millenniums BC., is the golden rod, molded shape with images of bull’s head decorated with exquisite rows of granules on the forehead, ears and neck, apparently representing the regalia of power. Samples of false grain fixed on seven identical earrings dating from the VIII BC., found in Mingechevir testify about not only fashion of the grain, but also prove the high craftsmanship of jewelers in filigree techniques. There are diverse and sophisticated numerous jewelry antiquities indicated by their compositional structure (III in. B.C-III century A.D), where there are soldered grains in the form of grape bunches. The results show us not only the local origin of grain jewelry, but also a high level of development of elite society and jewelers in the Middle Bronze Age. There is a reason to believe that, property differentiation during the Middle Bronze Age in Azerbaijan had already occurred in the proto-urban societies.

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?

  1. 確認自己的 OpenSSL 版本是否在受害範圍
  2. 使用 ssltest.py 檢測工具檢測是否含有漏洞
  3. 更新 OpenSSL 至 1.0.1g 或 1.0.2-beta2
  4. 重開所有與 OpenSSL 函式庫相關之服務
  5. 重新產生 SSL Private Key (因為 Private Key 可能藉由漏洞外洩)
  6. 將網站舊憑證撤銷
  7. 清除所有目前網頁伺服器上的 Session (因為可能遭到竊取)
  8. 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

nest...

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