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NetworkPkg/IpSecDxe: Fix issue to parse SA Payload.

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Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1251

*v2: Correct the type of parameters in Ikev2ParseProposalData(), and refined
the corresponding description.

IpSecDxe failed to create the Child SA during parsing SA Payload, the issue
was caused by the below commit:

SHA-1: 1e0db7b11987d0ec93be7dfe26102a327860fdbd
* MdeModulePkg/NetworkPkg: Checking for NULL pointer before use.

In above commit, it changed the value of IsMatch in Ikev2ChildSaParseSaPayload()
to FALSE. That's correct but it exposed the potential bug in to match the correct
proposal Data, which will cause the issue happen.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
This commit is contained in:
Jiaxin Wu 2018-10-12 16:00:57 +08:00
parent ddc6d41d12
commit 95aea2fac9
1 changed files with 39 additions and 21 deletions
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60
NetworkPkg/IpSecDxe/Ikev2/Utility.c
View File

@ -1995,28 +1995,45 @@ Ikev2IsSupportAlg (
/** /**
Get the preferred algorithm types from ProposalData. Get the preferred algorithm types from ProposalData.
@param[in] ProposalData Pointer to related IKEV2_PROPOSAL_DATA. @param[in] ProposalData Pointer to related IKEV2_PROPOSAL_DATA.
@param[out] PreferEncryptAlgorithm Output of preferred encrypt algorithm. @param[in, out] PreferEncryptAlgorithm Pointer to buffer which is used to store the
@param[out] PreferIntegrityAlgorithm Output of preferred integrity algorithm. preferred encrypt algorithm.
@param[out] PreferPrfAlgorithm Output of preferred PRF algorithm. Only Input value shall be initialized to zero that
for IKE SA. indicates to be parsed from ProposalData.
@param[out] PreferDhGroup Output of preferred DH group. Only for Output of preferred encrypt algorithm.
IKE SA. @param[in, out] PreferIntegrityAlgorithm Pointer to buffer which is used to store the
@param[out] PreferEncryptKeylength Output of preferred encrypt key length preferred integrity algorithm.
in bytes. Input value shall be initialized to zero that
@param[out] IsSupportEsn Output of value about the Extented Sequence indicates to be parsed from ProposalData.
Number is support or not. Only for Child SA. Output of preferred integrity algorithm.
@param[in] IsChildSa If it is ture, the ProposalData is for IKE @param[in, out] PreferPrfAlgorithm Pointer to buffer which is used to store the
SA. Otherwise the proposalData is for Child SA. preferred PRF algorithm.
Input value shall be initialized to zero that
indicates to be parsed from ProposalData.
Output of preferred PRF algorithm. Only
for IKE SA.
@param[in, out] PreferDhGroup Pointer to buffer which is used to store the
preferred DH group.
Input value shall be initialized to zero that
indicates to be parsed from ProposalData.
Output of preferred DH group. Only for
IKE SA.
@param[out] PreferEncryptKeylength Pointer to buffer which is used to store the
preferred encrypt key length in bytes.
@param[out] IsSupportEsn Pointer to buffer which is used to store the
value about the Extented Sequence Number is
support or not. Only for Child SA.
@param[in] IsChildSa If it is ture, the ProposalData is for IKE
SA. Otherwise the proposalData is for Child SA.
**/ **/
VOID VOID
Ikev2ParseProposalData ( Ikev2ParseProposalData (
IN IKEV2_PROPOSAL_DATA *ProposalData, IN IKEV2_PROPOSAL_DATA *ProposalData,
OUT UINT16 *PreferEncryptAlgorithm, IN OUT UINT16 *PreferEncryptAlgorithm,
OUT UINT16 *PreferIntegrityAlgorithm, IN OUT UINT16 *PreferIntegrityAlgorithm,
OUT UINT16 *PreferPrfAlgorithm, IN OUT UINT16 *PreferPrfAlgorithm,
OUT UINT16 *PreferDhGroup, IN OUT UINT16 *PreferDhGroup,
OUT UINTN *PreferEncryptKeylength, OUT UINTN *PreferEncryptKeylength,
OUT BOOLEAN *IsSupportEsn, OUT BOOLEAN *IsSupportEsn,
IN BOOLEAN IsChildSa IN BOOLEAN IsChildSa
@ -2504,11 +2521,12 @@ Ikev2ChildSaParseSaPayload (
) { ) {
IsMatch = TRUE; IsMatch = TRUE;
} else { } else {
PreferEncryptAlgorithm = 0; IntegrityAlgorithm = 0;
PreferIntegrityAlgorithm = 0; EncryptAlgorithm = 0;
IsSupportEsn = TRUE; EncryptKeylength = 0;
IsSupportEsn = FALSE;
} }
ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) + ProposalData = (IKEV2_PROPOSAL_DATA*)((UINT8*)(ProposalData + 1) +
ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA)); ProposalData->NumTransforms * sizeof (IKEV2_TRANSFORM_DATA));
} }