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[NTOS:SE] Fix handling of relative security descriptors in SeQuerySecurityDescriptorInfo

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This commit is contained in:
Timo Kreuzer 2020-01-03 20:44:05 +01:00
parent dab6b26a57
commit 274bc4de1c
1 changed files with 18 additions and 14 deletions
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32
ntoskrnl/se/sd.c
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@ -658,28 +658,32 @@ SeQuerySecurityDescriptorInfo(
/* Calculate the required security descriptor length */
Control = SE_SELF_RELATIVE;
if ((*SecurityInformation & OWNER_SECURITY_INFORMATION) &&
(ObjectSd->Owner != NULL))
if (*SecurityInformation & OWNER_SECURITY_INFORMATION)
{
Owner = (PSID)((ULONG_PTR)ObjectSd->Owner + (ULONG_PTR)ObjectSd);
OwnerLength = ROUND_UP(RtlLengthSid(Owner), 4);
Control |= (ObjectSd->Control & SE_OWNER_DEFAULTED);
Owner = SepGetOwnerFromDescriptor(ObjectSd);
if (Owner != NULL)
{
OwnerLength = ROUND_UP(RtlLengthSid(Owner), 4);
Control |= (ObjectSd->Control & SE_OWNER_DEFAULTED);
}
}
if ((*SecurityInformation & GROUP_SECURITY_INFORMATION) &&
(ObjectSd->Group != NULL))
if (*SecurityInformation & GROUP_SECURITY_INFORMATION)
{
Group = (PSID)((ULONG_PTR)ObjectSd->Group + (ULONG_PTR)ObjectSd);
GroupLength = ROUND_UP(RtlLengthSid(Group), 4);
Control |= (ObjectSd->Control & SE_GROUP_DEFAULTED);
Group = SepGetGroupFromDescriptor(ObjectSd);
if (Group != NULL)
{
GroupLength = ROUND_UP(RtlLengthSid(Group), 4);
Control |= (ObjectSd->Control & SE_GROUP_DEFAULTED);
}
}
if ((*SecurityInformation & DACL_SECURITY_INFORMATION) &&
(ObjectSd->Control & SE_DACL_PRESENT))
{
if (ObjectSd->Dacl != NULL)
Dacl = SepGetDaclFromDescriptor(ObjectSd);
if (Dacl != NULL)
{
Dacl = (PACL)((ULONG_PTR)ObjectSd->Dacl + (ULONG_PTR)ObjectSd);
DaclLength = ROUND_UP((ULONG)Dacl->AclSize, 4);
}
@ -689,9 +693,9 @@ SeQuerySecurityDescriptorInfo(
if ((*SecurityInformation & SACL_SECURITY_INFORMATION) &&
(ObjectSd->Control & SE_SACL_PRESENT))
{
if (ObjectSd->Sacl != NULL)
Sacl = SepGetSaclFromDescriptor(ObjectSd);
if (Sacl != NULL)
{
Sacl = (PACL)((ULONG_PTR)ObjectSd->Sacl + (ULONG_PTR)ObjectSd);
SaclLength = ROUND_UP(Sacl->AclSize, 4);
}