In the GNU C Library (aka glibc or libc6) up to and including 2.28, the getaddrinfo function would successfully parse a string that contained an IPv4 address followed by whitespace and arbitrary characters, which could lead applications to incorrectly assume that it had parsed a valid string, without the possibility of embedded HTTP headers or other potentially dangerous substrings.
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gnu glibc |
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opensuse leap 15.0 |