Unresolved Socket Descriptor Allocation Vulnerability in GNU C Library

Unresolved Socket Descriptor Allocation Vulnerability in GNU C Library

CVE-2018-19591 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.

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