DNS Stub Resolver Vulnerability in glibc: Simplifying Off-Path DNS Spoofing Attacks

CVE-2017-12132 · MEDIUM Severity

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

The DNS stub resolver in the GNU C Library (aka glibc or libc6) before version 2.26, when EDNS support is enabled, will solicit large UDP responses from name servers, potentially simplifying off-path DNS spoofing attacks due to IP fragmentation.

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