MdeModulePkg/NetLib: Handle an invalid IPv6 address case
Handle an invalid IPv6 address in NetLibAsciiStrToIp6(),
like '2000:aaaa::1com'.
Cc: Zhang Lubo <lubo.zhang@intel.com>
Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Zhang Lubo <lubo.zhang@intel.com>
diff --git a/MdeModulePkg/Include/Library/NetLib.h b/MdeModulePkg/Include/Library/NetLib.h
index 26709af..09ead09 100644
--- a/MdeModulePkg/Include/Library/NetLib.h
+++ b/MdeModulePkg/Include/Library/NetLib.h
@@ -523,6 +523,7 @@
extern EFI_IPv4_ADDRESS mZeroIp4Addr;
#define NET_IS_DIGIT(Ch) (('0' <= (Ch)) && ((Ch) <= '9'))
+#define NET_IS_HEX(Ch) ((('0' <= (Ch)) && ((Ch) <= '9')) || (('A' <= (Ch)) && ((Ch) <= 'F')) || (('a' <= (Ch)) && ((Ch) <= 'f')))
#define NET_ROUNDUP(size, unit) (((size) + (unit) - 1) & (~((unit) - 1)))
#define NET_IS_LOWER_CASE_CHAR(Ch) (('a' <= (Ch)) && ((Ch) <= 'z'))
#define NET_IS_UPPER_CASE_CHAR(Ch) (('A' <= (Ch)) && ((Ch) <= 'Z'))
diff --git a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
index 0804052..0a7117c 100644
--- a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
+++ b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
@@ -2832,6 +2832,17 @@
TempStr = Ip6Str;
while ((*Ip6Str != '\0') && (*Ip6Str != ':')) {
+ if (Index != 14 && !NET_IS_HEX (*Ip6Str)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Allow the IPv6 with prefix case, e.g. 2000:aaaa::10/24
+ //
+ if (Index == 14 && !NET_IS_HEX (*Ip6Str) && *Ip6Str != '/') {
+ return EFI_INVALID_PARAMETER;
+ }
+
Ip6Str++;
}
