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openSUSE:Evergreen:11.4
openssl.import5761
CVE-2012-0050.patch
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File CVE-2012-0050.patch of Package openssl.import5761
Index: openssl-1.0.0e/ssl/d1_pkt.c =================================================================== --- openssl-1.0.0e.orig/ssl/d1_pkt.c +++ openssl-1.0.0e/ssl/d1_pkt.c @@ -376,6 +376,7 @@ dtls1_process_record(SSL *s) unsigned int mac_size; unsigned char md[EVP_MAX_MD_SIZE]; int decryption_failed_or_bad_record_mac = 0; + unsigned char *mac = NULL; rr= &(s->s3->rrec); @@ -447,19 +448,15 @@ printf("\n"); #endif } /* check the MAC for rr->input (it's in mac_size bytes at the tail) */ - if (rr->length < mac_size) + if (rr->length >= mac_size) { -#if 0 /* OK only for stream ciphers */ - al=SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_DTLS1_PROCESS_RECORD,SSL_R_LENGTH_TOO_SHORT); - goto f_err; -#else - decryption_failed_or_bad_record_mac = 1; -#endif + rr->length -= mac_size; + mac = &rr->data[rr->length]; } - rr->length-=mac_size; + else + rr->length = 0; i=s->method->ssl3_enc->mac(s,md,0); - if (i < 0 || memcmp(md,&(rr->data[rr->length]),mac_size) != 0) + if (i < 0 || mac == NULL || memcmp(md, mac, mac_size) != 0) { decryption_failed_or_bad_record_mac = 1; }
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