CVE-2015-0235:讓人爆炸的「glibc gethostbyname buffer overflow」

CVE-2015-0235:glibc gethostbyname buffer overflow 的問題是:

Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and other 2.x versions before 2.18, allows context-dependent attackers to execute arbitrary code via vectors related to the (1) gethostbyname or (2) gethostbyname2 function, aka "GHOST."

這個洞讓只要有接受外部 hostname 查詢的部份就會中獎 (因為所有程式語言大概都是用這組 function 查詢,除了少部份是使用 DNS 查),再加上幾乎每支程式都會用到 glibc,在更新完後得重開機,於是有一堆機器得重開機更新了...

Ubuntu 12.04 中獎,不過 14.04 混過去了...

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