Mitigate Baron SameEdit (CVE-2021-3156) vulnerability

sles 15.2
crypto weakness #31

4

Weakness Breakdown


Definition:

This weakness involves creating non-standard or non-tested algorithms, using weak algorithms or applying cryptographic algorithms incorrectly. Algorithms that were once considered safe are commonly later found to be unsafe, as the algorithms were broken.

Warning code(s):

DES only supports a 56-bit keysize, which is too small given today's computers.

File Name:

shim-15+git47/Cryptlib/OpenSSL/crypto/evp/c_allc.c

Context:

The highlighted line of code below is the trigger point of this particular Sles 15.2 crypto weakness.

 #include <internal/evp_int.h>
#include <openssl/pkcs12.h>
#include <openssl/objects.h>

void openssl_add_all_ciphers_int(void)
{

#ifndef OPENSSL_NO_DES
    EVP_add_cipher(EVP_des_cfb());
    EVP_add_cipher(EVP_des_cfb1());
    EVP_add_cipher(EVP_des_cfb8());
    EVP_add_cipher(EVP_des_ede_cfb());
    EVP_add_cipher(EVP_des_ede3_cfb());
    EVP_add_cipher(EVP_des_ede3_cfb1());
    EVP_add_cipher(EVP_des_ede3_cfb8());

    EVP_add_cipher(EVP_des_ofb());
    EVP_add_cipher(EVP_des_ede_ofb());
    EVP_add_cipher(EVP_des_ede3_ofb());

    EVP_add_cipher(EVP_desx_cbc());
    EVP_add_cipher_alias(SN_desx_cbc, "DESX");
    EVP_add_cipher_alias(SN_desx_cbc, "desx");

    EVP_add_cipher(EVP_des_cbc());
    EVP_add_cipher_alias(SN_des_cbc, "DES");
    EVP_add_cipher_alias(SN_des_cbc, "des");
    EVP_add_cipher(EVP_des_ede_cbc());
    EVP_add_cipher(EVP_des_ede3_cbc());
    EVP_add_cipher_alias(SN_des_ede3_cbc, "DES3");
    EVP_add_cipher_alias(SN_des_ede3_cbc, "des3");

    EVP_add_cipher(EVP_des_ecb());
    EVP_add_cipher(EVP_des_ede());
    EVP_add_cipher_alias(SN_des_ede_ecb, "DES-EDE-ECB");
    EVP_add_cipher_alias(SN_des_ede_ecb, "des-ede-ecb");
    EVP_add_cipher(EVP_des_ede3());
    EVP_add_cipher_alias(SN_des_ede3_ecb, "DES-EDE3-ECB");
    EVP_add_cipher_alias(SN_des_ede3_ecb, "des-ede3-ecb");
    EVP_add_cipher(EVP_des_ede3_wrap());
    EVP_add_cipher_alias(SN_id_smime_alg_CMS3DESwrap, "des3-wrap");
#endif

#ifndef OPENSSL_NO_RC4
    EVP_add_cipher(EVP_rc4());
    EVP_add_cipher(EVP_rc4_40());
# ifndef OPENSSL_NO_MD5
    EVP_add_cipher(EVP_rc4_hmac_md5());
# endif
#endif 

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