Public bug reported:

Imported from Debian bug http://bugs.debian.org/1138475:

Package: ncrack
Version: 0.7+debian-6
Severity: normal
Tags: sid
control: affects -1 src:openssl
User: [email protected]
Usertags: openssl-4.0

OpenSSL 4.0 is in experimental. This package fails to build against it:

| gcc -g -O2 -Werror=implicit-function-declaration 
-ffile-prefix-map=/build/reproducible-path/ncrack-0.7+debian=. 
-fstack-protector-strong -fstack-clash-protection -Wformat 
-Werror=format-security -fcf-protection -Wall -Wpointer-arith -Wuninitialized 
-Wsign-compare -Wformat-security -Wsizeof-pointer-memaccess -Wno-pointer-sign 
-Wno-unused-result -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -ftrapv 
-fno-builtin-memset -fstack-protector-strong -fPIE  -I. -Wdate-time 
-D_FORTIFY_SOURCE=2 -DHAVE_CONFIG_H -c cipher-bf1.c
| cipher-bf1.c: In function ‘evp_ssh1_bf’:
| cipher-bf1.c:93:19: error: implicit declaration of function 
‘EVP_CIPHER_meth_dup’; did you mean ‘EVP_CIPHER_CTX_dup’? 
[-Wimplicit-function-declaration]
|    93 |         ssh1_bf = EVP_CIPHER_meth_dup(EVP_bf_cbc());
|       |                   ^~~~~~~~~~~~~~~~~~~
|       |                   EVP_CIPHER_CTX_dup
| cipher-bf1.c:93:17: error: assignment to ‘EVP_CIPHER *’ {aka ‘struct 
evp_cipher_st *’} from ‘int’ makes pointer from integer without a cast 
[-Wint-conversion]
|    93 |         ssh1_bf = EVP_CIPHER_meth_dup(EVP_bf_cbc());
|       |                 ^
| cipher-bf1.c:94:26: error: implicit declaration of function 
‘EVP_CIPHER_meth_get_do_cipher’; did you mean 
‘EVP_CIPHER_CTX_get1_cipher’? [-Wimplicit-function-declaration]
|    94 |         orig_do_cipher = EVP_CIPHER_meth_get_do_cipher(ssh1_bf);
|       |                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|       |                          EVP_CIPHER_CTX_get1_cipher
| cipher-bf1.c:94:24: error: assignment to ‘int (*)(EVP_CIPHER_CTX *, u_char 
*, const u_char *, size_t)’ {aka ‘int (*)(struct evp_cipher_ctx_st *, 
unsigned char *, const unsigned char *, long unsigned int)’} from ‘int’ 
makes pointer from integer without a cast [-Wint-conversion]
|    94 |         orig_do_cipher = EVP_CIPHER_meth_get_do_cipher(ssh1_bf);
|       |                        ^
| cipher-bf1.c:99:9: error: implicit declaration of function 
‘EVP_CIPHER_meth_set_do_cipher’; did you mean 
‘EVP_CIPHER_CTX_get1_cipher’? [-Wimplicit-function-declaration]
|    99 |         EVP_CIPHER_meth_set_do_cipher(ssh1_bf, bf_ssh1_do_cipher);
|       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|       |         EVP_CIPHER_CTX_get1_cipher
| make[2]: *** [Makefile:72: cipher-bf1.o] Error 1
| make[2]: Leaving directory 
'/build/reproducible-path/ncrack-0.7+debian/opensshlib'

Full buildlog
        
https://breakpoint.cc/openssl-rebuild/logs-4/attempted/ncrack_0.7+debian-6_amd64-2026-04-19T14:15:07Z

Sebastian

** Affects: ncrack (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: ncrack (Debian)
     Importance: Undecided
         Status: New


** Tags: ftbfs openssl-4.0

** Bug watch added: Debian Bug tracker #1138475
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1138475

** Changed in: ncrack (Debian)
 Remote watch: None => Debian Bug tracker #1138475

** Tags added: ftbfs openssl-4.0

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https://bugs.launchpad.net/bugs/2155027

Title:
  ncrack: FTBFS with openssl 4.0

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