From 57895cdc764809ad29336431ee6b43c68fe15f15 Mon Sep 17 00:00:00 2001 From: Colin Percival Date: Wed, 22 Apr 2009 14:07:14 +0000 Subject: Don't leak information via uninitialized space in db(3) records. [09:07] Sanity-check string lengths in order to stop OpenSSL crashing when printing corrupt BMPString or UniversalString objects. [09:08] Security: FreeBSD-SA-09:07.libc Security: FreeBSD-SA-09:08.openssl Security: CVE-2009-0590 Approved by: re (kensmith) Approved by: so (cperciva) --- UPDATING | 7 +++++++ crypto/openssl/crypto/asn1/asn1.h | 2 ++ crypto/openssl/crypto/asn1/asn1_err.c | 2 ++ crypto/openssl/crypto/asn1/tasn_dec.c | 12 ++++++++++++ lib/libc/db/btree/bt_split.c | 2 +- lib/libc/db/hash/hash_buf.c | 9 ++++++--- lib/libc/db/mpool/mpool.c | 2 +- sys/conf/newvers.sh | 2 +- 8 files changed, 32 insertions(+), 6 deletions(-) diff --git a/UPDATING b/UPDATING index 85cac64c0ef1..fe97e883916a 100644 --- a/UPDATING +++ b/UPDATING @@ -8,6 +8,13 @@ Items affecting the ports and packages system can be found in /usr/ports/UPDATING. Please read that file before running portupgrade. +20090422: p12 FreeBSD-SA-09:07.libc, FreeBSD-SA-09:08.openssl + Don't leak information via uninitialized space in db(3) records. + [09:07] + + Sanity-check string lengths in order to stop OpenSSL crashing + when printing corrupt BMPString or UniversalString objects. [09:08] + 20090323: p11 FreeBSD-SA-09:06.ktimer, FreeBSD-EN-09:01.kenv Correctly sanity-check timer IDs. [SA-09:06] diff --git a/crypto/openssl/crypto/asn1/asn1.h b/crypto/openssl/crypto/asn1/asn1.h index a60ab04a340a..4574b21a21aa 100644 --- a/crypto/openssl/crypto/asn1/asn1.h +++ b/crypto/openssl/crypto/asn1/asn1.h @@ -1134,6 +1134,7 @@ void ERR_load_ASN1_strings(void); #define ASN1_R_BAD_OBJECT_HEADER 102 #define ASN1_R_BAD_PASSWORD_READ 103 #define ASN1_R_BAD_TAG 104 +#define ASN1_R_BMPSTRING_IS_WRONG_LENGTH 210 #define ASN1_R_BN_LIB 105 #define ASN1_R_BOOLEAN_IS_WRONG_LENGTH 106 #define ASN1_R_BUFFER_TOO_SMALL 107 @@ -1213,6 +1214,7 @@ void ERR_load_ASN1_strings(void); #define ASN1_R_UNABLE_TO_DECODE_RSA_KEY 157 #define ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY 158 #define ASN1_R_UNEXPECTED_EOC 159 +#define ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH 211 #define ASN1_R_UNKNOWN_FORMAT 160 #define ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM 161 #define ASN1_R_UNKNOWN_OBJECT_TYPE 162 diff --git a/crypto/openssl/crypto/asn1/asn1_err.c b/crypto/openssl/crypto/asn1/asn1_err.c index f6b5c3f3dd77..796cc96a7e51 100644 --- a/crypto/openssl/crypto/asn1/asn1_err.c +++ b/crypto/openssl/crypto/asn1/asn1_err.c @@ -188,6 +188,7 @@ static ERR_STRING_DATA ASN1_str_reasons[]= {ERR_REASON(ASN1_R_BAD_OBJECT_HEADER) ,"bad object header"}, {ERR_REASON(ASN1_R_BAD_PASSWORD_READ) ,"bad password read"}, {ERR_REASON(ASN1_R_BAD_TAG) ,"bad tag"}, +{ERR_REASON(ASN1_R_BMPSTRING_IS_WRONG_LENGTH),"bmpstring is wrong length"}, {ERR_REASON(ASN1_R_BN_LIB) ,"bn lib"}, {ERR_REASON(ASN1_R_BOOLEAN_IS_WRONG_LENGTH),"boolean is wrong length"}, {ERR_REASON(ASN1_R_BUFFER_TOO_SMALL) ,"buffer too small"}, @@ -267,6 +268,7 @@ static ERR_STRING_DATA ASN1_str_reasons[]= {ERR_REASON(ASN1_R_UNABLE_TO_DECODE_RSA_KEY),"unable to decode rsa key"}, {ERR_REASON(ASN1_R_UNABLE_TO_DECODE_RSA_PRIVATE_KEY),"unable to decode rsa private key"}, {ERR_REASON(ASN1_R_UNEXPECTED_EOC) ,"unexpected eoc"}, +{ERR_REASON(ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH),"universalstring is wrong length"}, {ERR_REASON(ASN1_R_UNKNOWN_FORMAT) ,"unknown format"}, {ERR_REASON(ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM),"unknown message digest algorithm"}, {ERR_REASON(ASN1_R_UNKNOWN_OBJECT_TYPE) ,"unknown object type"}, diff --git a/crypto/openssl/crypto/asn1/tasn_dec.c b/crypto/openssl/crypto/asn1/tasn_dec.c index 66d229b08b39..ab646daa6a26 100644 --- a/crypto/openssl/crypto/asn1/tasn_dec.c +++ b/crypto/openssl/crypto/asn1/tasn_dec.c @@ -1012,6 +1012,18 @@ int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, case V_ASN1_SET: case V_ASN1_SEQUENCE: default: + if (utype == V_ASN1_BMPSTRING && (len & 1)) + { + ASN1err(ASN1_F_ASN1_EX_C2I, + ASN1_R_BMPSTRING_IS_WRONG_LENGTH); + goto err; + } + if (utype == V_ASN1_UNIVERSALSTRING && (len & 3)) + { + ASN1err(ASN1_F_ASN1_EX_C2I, + ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH); + goto err; + } /* All based on ASN1_STRING and handled the same */ if (!*pval) { diff --git a/lib/libc/db/btree/bt_split.c b/lib/libc/db/btree/bt_split.c index dc2791762af0..94fa15317d8f 100644 --- a/lib/libc/db/btree/bt_split.c +++ b/lib/libc/db/btree/bt_split.c @@ -381,7 +381,7 @@ bt_page(t, h, lp, rp, skip, ilen) } /* Put the new left page for the split into place. */ - if ((l = (PAGE *)malloc(t->bt_psize)) == NULL) { + if ((l = (PAGE *)calloc(1, t->bt_psize)) == NULL) { mpool_put(t->bt_mp, r, 0); return (NULL); } diff --git a/lib/libc/db/hash/hash_buf.c b/lib/libc/db/hash/hash_buf.c index db8ad1a3db24..0882eb315a49 100644 --- a/lib/libc/db/hash/hash_buf.c +++ b/lib/libc/db/hash/hash_buf.c @@ -57,6 +57,7 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #ifdef DEBUG #include @@ -174,12 +175,12 @@ newbuf(hashp, addr, prev_bp) */ if (hashp->nbufs || (bp->flags & BUF_PIN)) { /* Allocate a new one */ - if ((bp = (BUFHEAD *)malloc(sizeof(BUFHEAD))) == NULL) + if ((bp = (BUFHEAD *)calloc(1, sizeof(BUFHEAD))) == NULL) return (NULL); #ifdef PURIFY memset(bp, 0xff, sizeof(BUFHEAD)); #endif - if ((bp->page = (char *)malloc(hashp->BSIZE)) == NULL) { + if ((bp->page = (char *)calloc(1, hashp->BSIZE)) == NULL) { free(bp); return (NULL); } @@ -328,8 +329,10 @@ __buf_free(hashp, do_free, to_disk) } /* Check if we are freeing stuff */ if (do_free) { - if (bp->page) + if (bp->page) { + (void)memset(bp->page, 0, hashp->BSIZE); free(bp->page); + } BUF_REMOVE(bp); free(bp); bp = LRU; diff --git a/lib/libc/db/mpool/mpool.c b/lib/libc/db/mpool/mpool.c index aedf1fd0115f..24860b2043bd 100644 --- a/lib/libc/db/mpool/mpool.c +++ b/lib/libc/db/mpool/mpool.c @@ -343,7 +343,7 @@ mpool_bkt(mp) return (bp); } -new: if ((bp = (BKT *)malloc(sizeof(BKT) + mp->pagesize)) == NULL) +new: if ((bp = (BKT *)calloc(1, sizeof(BKT) + mp->pagesize)) == NULL) return (NULL); #ifdef STATISTICS ++mp->pagealloc; diff --git a/sys/conf/newvers.sh b/sys/conf/newvers.sh index fa8190b1dec8..1768f72914a3 100644 --- a/sys/conf/newvers.sh +++ b/sys/conf/newvers.sh @@ -32,7 +32,7 @@ TYPE="FreeBSD" REVISION="7.0" -BRANCH="RELEASE-p11" +BRANCH="RELEASE-p12" if [ "X${BRANCH_OVERRIDE}" != "X" ]; then BRANCH=${BRANCH_OVERRIDE} fi -- cgit v1.2.3