linux - "POSSIBLE BREAK-IN ATTEMPT!" in /var/log/secure
A stack-based critical buffer overflow was found in the way the libresolv library (glibc) performed dual A/AAAA DNS queries. A remote attacker could crash or, potentially, execute code running the library on Linux. How do I patch and protect my server or workstation against the glibc getaddrinfo on Linux operating system? Read more… ADDRINFOA (ws2def.h) - Win32 apps | Microsoft Docs The GetAddrInfo function should be called with the nodename and servname parameters of a pointer of type TCHAR and the hints and res parameters of a pointer of type ADDRINFOT. When UNICODE or _UNICODE is not defined, ADDRINFOT is defined to the addrinfo structure and GetAddrInfo is defined to getaddrinfo… getaddrinfo(3) - Linux man page Name. Synopsis. Description. This field specifies the desired address family for the returned addresses. Valid values for this field Return Value. The specified network host does not have any network addresses in the requested address family. The name Files.
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rdma_getaddrinfo(3) - Linux man page If node is provided, rdma_getaddrinfo will attempt to resolve the RDMA address, route, and connection data to the given node. The hints parameter, if provided, … linux - DNS lookups sometimes take 5 seconds - Unix One of the differences between getaddrinfo() and gethostbyname() is that the former supports both IPv4 and IPv6, while the latter only supports IPv4. So when you call getaddrinfo() with ai_family set to 0 (AF_UNSPEC), it won't return until it gets a response (or hits a timeout) for both A and AAAA queries for the domain name provided.
CentOS Linux 7 (Core) OS Version: 7.2.1511: Product Version: 7.2.1511 Target Version: Fixed in Version Summary: 0011000: getaddrinfo() causes SIGSEGV in a multi-threaded program when linked statically: Description: This problem seems to be an incarnation of a problem reported elsewhere long ago:
If node is provided, rdma_getaddrinfo will attempt to resolve the RDMA address, route, and connection data to the given node. The hints parameter, if provided, … linux - DNS lookups sometimes take 5 seconds - Unix One of the differences between getaddrinfo() and gethostbyname() is that the former supports both IPv4 and IPv6, while the latter only supports IPv4. So when you call getaddrinfo() with ai_family set to 0 (AF_UNSPEC), it won't return until it gets a response (or hits a timeout) for both A and AAAA queries for the domain name provided. 解决getaddrinfo for ipv6 link local - ipv6-getaddrinfo 1 Answers 1 解决方法. When you give NULL as hints, getaddrinfo will automatically use AI_ADDRCONFIG.Usually you'd want that flag set, but when connecting to a link local address is the one case where you don't want it.