net-snmp/net-snmp-5.4.1-perl-snprintf.patch
2008-06-10 06:02:57 +00:00

107 lines
3.5 KiB
Diff

447262: CVE-2008-2292 net-snmp: buffer overflow in perl module's Perl Module __snprint_value()
Source: upstream, http://net-snmp.svn.sourceforge.net/viewvc/net-snmp?view=rev&sortby=date&revision=16770
Reviewed-By: Jan Safranek <jsafrane@redhat.com>
--- branches/V5-4-patches/net-snmp/perl/SNMP/SNMP.xs 2007/12/21 23:19:29 16769
+++ branches/V5-4-patches/net-snmp/perl/SNMP/SNMP.xs 2007/12/22 19:22:44 16770
@@ -470,14 +470,16 @@
if (flag == USE_ENUMS) {
for(ep = tp->enums; ep; ep = ep->next) {
if (ep->value == *var->val.integer) {
- strcpy(buf, ep->label);
+ strncpy(buf, ep->label, buf_len);
+ buf[buf_len-1] = '\0';
len = strlen(buf);
break;
}
}
}
if (!len) {
- sprintf(buf,"%ld", *var->val.integer);
+ snprintf(buf, buf_len, "%ld", *var->val.integer);
+ buf[buf_len-1] = '\0';
len = strlen(buf);
}
break;
@@ -486,21 +488,25 @@
case ASN_COUNTER:
case ASN_TIMETICKS:
case ASN_UINTEGER:
- sprintf(buf,"%lu", (unsigned long) *var->val.integer);
+ snprintf(buf, buf_len, "%lu", (unsigned long) *var->val.integer);
+ buf[buf_len-1] = '\0';
len = strlen(buf);
break;
case ASN_OCTET_STR:
case ASN_OPAQUE:
- memcpy(buf, (char*)var->val.string, var->val_len);
len = var->val_len;
+ if ( len > buf_len )
+ len = buf_len;
+ memcpy(buf, (char*)var->val.string, len);
break;
case ASN_IPADDRESS:
- ip = (u_char*)var->val.string;
- sprintf(buf, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
- len = strlen(buf);
- break;
+ ip = (u_char*)var->val.string;
+ snprintf(buf, buf_len, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
+ buf[buf_len-1] = '\0';
+ len = strlen(buf);
+ break;
case ASN_NULL:
break;
@@ -512,14 +518,14 @@
break;
case SNMP_ENDOFMIBVIEW:
- sprintf(buf,"%s", "ENDOFMIBVIEW");
- break;
+ snprintf(buf, buf_len, "%s", "ENDOFMIBVIEW");
+ break;
case SNMP_NOSUCHOBJECT:
- sprintf(buf,"%s", "NOSUCHOBJECT");
- break;
+ snprintf(buf, buf_len, "%s", "NOSUCHOBJECT");
+ break;
case SNMP_NOSUCHINSTANCE:
- sprintf(buf,"%s", "NOSUCHINSTANCE");
- break;
+ snprintf(buf, buf_len, "%s", "NOSUCHINSTANCE");
+ break;
case ASN_COUNTER64:
#ifdef NETSNMP_WITH_OPAQUE_SPECIAL_TYPES
@@ -538,19 +544,19 @@
#endif
case ASN_BIT_STR:
- snprint_bitstring(buf, sizeof(buf), var, NULL, NULL, NULL);
+ snprint_bitstring(buf, buf_len, var, NULL, NULL, NULL);
len = strlen(buf);
break;
#ifdef NETSNMP_WITH_OPAQUE_SPECIAL_TYPES
case ASN_OPAQUE_FLOAT:
- if (var->val.floatVal)
- sprintf(buf,"%f", *var->val.floatVal);
- break;
+ if (var->val.floatVal)
+ snprintf(buf, buf_len, "%f", *var->val.floatVal);
+ break;
case ASN_OPAQUE_DOUBLE:
- if (var->val.doubleVal)
- sprintf(buf,"%f", *var->val.doubleVal);
- break;
+ if (var->val.doubleVal)
+ snprintf(buf, buf_len, "%f", *var->val.doubleVal);
+ break;
#endif
case ASN_NSAP: