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CVE-2023-6004: misc: Add function to check allowed characters of a hostname

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The hostname can be a domain name or an ip address. The colon has to be
allowed because of IPv6 even it is prohibited in domain names.

Signed-off-by: Norbert Pocs <norbertpocs0@gmail.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
This commit is contained in:
Norbert Pocs
2023-10-10 12:44:16 +02:00
committed by Andreas Schneider
parent b83368b2ed
commit 0ff85b034a
2 changed files with 70 additions and 0 deletions
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include/libssh/misc.h
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@@ -122,6 +122,8 @@ char *ssh_strreplace(const char *src, const char *pattern, const char *repl);
ssize_t ssh_readn(int fd, void *buf, size_t nbytes);
ssize_t ssh_writen(int fd, const void *buf, size_t nbytes);
int ssh_check_hostname_syntax(const char *hostname);
#ifdef __cplusplus
}
#endif