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openssl-CVE-2024-0727.patch
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File openssl-CVE-2024-0727.patch of Package openssl-1_1-devrandom
From 09df4395b5071217b76dc7d3d2e630eb8c5a79c2 Mon Sep 17 00:00:00 2001 From: Matt Caswell <matt@openssl.org> Date: Fri, 19 Jan 2024 11:28:58 +0000 Subject: [PATCH] Add NULL checks where ContentInfo data can be NULL PKCS12 structures contain PKCS7 ContentInfo fields. These fields are optional and can be NULL even if the "type" is a valid value. OpenSSL was not properly accounting for this and a NULL dereference can occur causing a crash. CVE-2024-0727 Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Hugo Landau <hlandau@openssl.org> Reviewed-by: Neil Horman <nhorman@openssl.org> (Merged from https://github.com/openssl/openssl/pull/23362) (cherry picked from commit d135eeab8a5dbf72b3da5240bab9ddb7678dbd2c) --- crypto/pkcs12/p12_add.c | 18 ++++++++++++++++++ crypto/pkcs12/p12_mutl.c | 5 +++++ crypto/pkcs12/p12_npas.c | 5 +++-- crypto/pkcs7/pk7_mime.c | 7 +++++-- 4 files changed, 31 insertions(+), 4 deletions(-) Index: openssl-1.1.1w/crypto/pkcs12/p12_add.c =================================================================== --- openssl-1.1.1w.orig/crypto/pkcs12/p12_add.c +++ openssl-1.1.1w/crypto/pkcs12/p12_add.c @@ -76,6 +76,12 @@ STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_ PKCS12_R_CONTENT_TYPE_NOT_DATA); return NULL; } + + if (p7->d.data == NULL) { + PKCS12err(PKCS12_F_PKCS12_UNPACK_P7DATA, PKCS12_R_DECODE_ERROR); + return NULL; + } + return ASN1_item_unpack(p7->d.data, ASN1_ITEM_rptr(PKCS12_SAFEBAGS)); } @@ -132,6 +138,12 @@ STACK_OF(PKCS12_SAFEBAG) *PKCS12_unpack_ { if (!PKCS7_type_is_encrypted(p7)) return NULL; + + if (p7->d.encrypted == NULL) { + PKCS12err(PKCS12_F_PKCS12_UNPACK_P7ENCDATA, PKCS12_R_DECODE_ERROR); + return NULL; + } + return PKCS12_item_decrypt_d2i(p7->d.encrypted->enc_data->algorithm, ASN1_ITEM_rptr(PKCS12_SAFEBAGS), pass, passlen, @@ -159,6 +171,13 @@ STACK_OF(PKCS7) *PKCS12_unpack_authsafes PKCS12_R_CONTENT_TYPE_NOT_DATA); return NULL; } + + if (p12->authsafes->d.data == NULL) { + PKCS12err(PKCS12_F_PKCS12_UNPACK_AUTHSAFES, + PKCS12_R_DECODE_ERROR); + return NULL; + } + return ASN1_item_unpack(p12->authsafes->d.data, ASN1_ITEM_rptr(PKCS12_AUTHSAFES)); } Index: openssl-1.1.1w/crypto/pkcs12/p12_mutl.c =================================================================== --- openssl-1.1.1w.orig/crypto/pkcs12/p12_mutl.c +++ openssl-1.1.1w/crypto/pkcs12/p12_mutl.c @@ -93,6 +93,11 @@ static int pkcs12_gen_mac(PKCS12 *p12, c return 0; } + if (p12->authsafes->d.data == NULL) { + PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_DECODE_ERROR); + return 0; + } + salt = p12->mac->salt->data; saltlen = p12->mac->salt->length; if (!p12->mac->iter) Index: openssl-1.1.1w/crypto/pkcs12/p12_npas.c =================================================================== --- openssl-1.1.1w.orig/crypto/pkcs12/p12_npas.c +++ openssl-1.1.1w/crypto/pkcs12/p12_npas.c @@ -78,8 +78,9 @@ static int newpass_p12(PKCS12 *p12, cons bags = PKCS12_unpack_p7data(p7); } else if (bagnid == NID_pkcs7_encrypted) { bags = PKCS12_unpack_p7encdata(p7, oldpass, -1); - if (!alg_get(p7->d.encrypted->enc_data->algorithm, - &pbe_nid, &pbe_iter, &pbe_saltlen)) + if (p7->d.encrypted == NULL + || !alg_get(p7->d.encrypted->enc_data->algorithm, + &pbe_nid, &pbe_iter, &pbe_saltlen)) goto err; } else { continue; Index: openssl-1.1.1w/crypto/pkcs7/pk7_mime.c =================================================================== --- openssl-1.1.1w.orig/crypto/pkcs7/pk7_mime.c +++ openssl-1.1.1w/crypto/pkcs7/pk7_mime.c @@ -30,10 +30,13 @@ int SMIME_write_PKCS7(BIO *bio, PKCS7 *p { STACK_OF(X509_ALGOR) *mdalgs; int ctype_nid = OBJ_obj2nid(p7->type); - if (ctype_nid == NID_pkcs7_signed) + if (ctype_nid == NID_pkcs7_signed) { + if (p7->d.sign == NULL) + return 0; mdalgs = p7->d.sign->md_algs; - else + } else { mdalgs = NULL; + } flags ^= SMIME_OLDMIME; Index: openssl-1.1.1w/crypto/err/openssl.txt =================================================================== --- openssl-1.1.1w.orig/crypto/err/openssl.txt +++ openssl-1.1.1w/crypto/err/openssl.txt @@ -1079,6 +1079,7 @@ PKCS12_F_PKCS12_SETUP_MAC:122:PKCS12_set PKCS12_F_PKCS12_SET_MAC:123:PKCS12_set_mac PKCS12_F_PKCS12_UNPACK_AUTHSAFES:130:PKCS12_unpack_authsafes PKCS12_F_PKCS12_UNPACK_P7DATA:131:PKCS12_unpack_p7data +PKCS12_F_PKCS12_UNPACK_P7ENCDATA:233:PKCS12_unpack_p7encdata PKCS12_F_PKCS12_VERIFY_MAC:126:PKCS12_verify_mac PKCS12_F_PKCS8_ENCRYPT:125:PKCS8_encrypt PKCS12_F_PKCS8_SET0_PBE:132:PKCS8_set0_pbe Index: openssl-1.1.1w/crypto/pkcs12/pk12err.c =================================================================== --- openssl-1.1.1w.orig/crypto/pkcs12/pk12err.c +++ openssl-1.1.1w/crypto/pkcs12/pk12err.c @@ -58,6 +58,8 @@ static const ERR_STRING_DATA PKCS12_str_ "PKCS12_unpack_authsafes"}, {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS12_UNPACK_P7DATA, 0), "PKCS12_unpack_p7data"}, + {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS12_UNPACK_P7ENCDATA, 0), + "PKCS12_unpack_p7encdata"}, {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS12_VERIFY_MAC, 0), "PKCS12_verify_mac"}, {ERR_PACK(ERR_LIB_PKCS12, PKCS12_F_PKCS8_ENCRYPT, 0), "PKCS8_encrypt"}, Index: openssl-1.1.1w/include/openssl/pkcs12err.h =================================================================== --- openssl-1.1.1w.orig/include/openssl/pkcs12err.h +++ openssl-1.1.1w/include/openssl/pkcs12err.h @@ -49,6 +49,7 @@ int ERR_load_PKCS12_strings(void); # define PKCS12_F_PKCS12_SET_MAC 123 # define PKCS12_F_PKCS12_UNPACK_AUTHSAFES 130 # define PKCS12_F_PKCS12_UNPACK_P7DATA 131 +# define PKCS12_F_PKCS12_UNPACK_P7ENCDATA 233 # define PKCS12_F_PKCS12_VERIFY_MAC 126 # define PKCS12_F_PKCS8_ENCRYPT 125 # define PKCS12_F_PKCS8_SET0_PBE 132
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