56 lines
1.5 KiB
Diff
56 lines
1.5 KiB
Diff
one-byte buffer overflow in slapd
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Resolves: #749324 (CVE-2011-4079)
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Upstream ITS: #7059
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Upstream commits: d0dd861 5072387
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Author: Howard Chu <hyc@openldap.org>
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diff -u
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--- a/servers/slapd/schema_init.c
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+++ b/servers/slapd/schema_init.c
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@@ -1852,12 +1852,12 @@ UTF8StringNormalize(
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}
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nvalue.bv_val[nvalue.bv_len] = '\0';
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- } else {
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+ } else if ( tmp.bv_len ) {
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/* string of all spaces is treated as one space */
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nvalue.bv_val[0] = ' ';
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nvalue.bv_val[1] = '\0';
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nvalue.bv_len = 1;
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- }
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+ } /* should never be entered with 0-length val */
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*normalized = nvalue;
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return LDAP_SUCCESS;
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@@ -2331,13 +2331,18 @@ postalAddressNormalize(
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}
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lines[l].bv_len = &val->bv_val[c] - lines[l].bv_val;
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- normalized->bv_len = l;
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+ normalized->bv_len = c = l;
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- for ( l = 0; !BER_BVISNULL( &lines[l] ); l++ ) {
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+ for ( l = 0; l <= c; l++ ) {
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/* NOTE: we directly normalize each line,
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* without unescaping the values, since the special
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* values '\24' ('$') and '\5C' ('\') are not affected
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* by normalization */
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+ if ( !lines[l].bv_len ) {
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+ nlines[l].bv_len = 0;
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+ nlines[l].bv_val = NULL;
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+ continue;
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+ }
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rc = UTF8StringNormalize( usage, NULL, xmr, &lines[l], &nlines[l], ctx );
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if ( rc != LDAP_SUCCESS ) {
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rc = LDAP_INVALID_SYNTAX;
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@@ -2350,7 +2355,7 @@ postalAddressNormalize(
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normalized->bv_val = slap_sl_malloc( normalized->bv_len + 1, ctx );
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p = normalized->bv_val;
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- for ( l = 0; !BER_BVISNULL( &nlines[l] ); l++ ) {
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+ for ( l = 0; l <= c ; l++ ) {
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p = lutil_strbvcopy( p, &nlines[l] );
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*p++ = '$';
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}
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