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| author | Corinna Vinschen <corinna@vinschen.de> | 2024-02-20 17:25:23 +0100 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2024-02-26 10:04:32 +0100 |
| commit | 271f187b7b59a6645e24e9c36b60ba31f6527556 (patch) | |
| tree | daef37ad15f44b5a0428504c1f739642d3bd67e6 | |
| parent | ec5ef42f545699ba02f53ce5b89b7dfc7e92d7ca (diff) | |
| download | newlib-271f187b7b59a6645e24e9c36b60ba31f6527556.zip newlib-271f187b7b59a6645e24e9c36b60ba31f6527556.tar.gz newlib-271f187b7b59a6645e24e9c36b60ba31f6527556.tar.bz2 | |
Cygwin: passwd/group: drop Capability SIDs
Capability SIDs (S-1-15-3-...) have been introduced with
Windows 10 1909. They don't resolve with LookupAccountSid.
We don't need them and they don't map gracefully into out
POSIX account namespace. Also, add code to make sure to
filter them out *iff* they become resolvable at one point.
While at it, slightly reorder code for non-resolving SIDs
by authority values.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
| -rw-r--r-- | winsup/cygwin/uinfo.cc | 47 |
1 files changed, 29 insertions, 18 deletions
diff --git a/winsup/cygwin/uinfo.cc b/winsup/cygwin/uinfo.cc index 21d729d..acbc945 100644 --- a/winsup/cygwin/uinfo.cc +++ b/winsup/cygwin/uinfo.cc @@ -2624,9 +2624,15 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, cyg_ldap *pldap) + (sid_sub_auth_rid (sid) & 0xff); #else if (sid_id_auth (sid) == 15 /* SECURITY_APP_PACKAGE_AUTHORITY */) - uid = 0x10000 + 0x100 * sid_id_auth (sid) - + 0x10 * sid_sub_auth (sid, 0) - + (sid_sub_auth_rid (sid) & 0xf); + { + /* Filter out all SIDs not referring to an App Package, for + instance, Capability SIDs (S-1-15-3-...) */ + if (sid_sub_auth (sid, 0) != SECURITY_APP_PACKAGE_BASE_RID) + return NULL; + uid = 0x10000 + 0x100 * sid_id_auth (sid) + + 0x10 * SECURITY_APP_PACKAGE_BASE_RID + + (sid_sub_auth_rid (sid) & 0xf); + } else if (sid_id_auth (sid) != 5 /* SECURITY_NT_AUTHORITY */) uid = 0x10000 + 0x100 * sid_id_auth (sid) + (sid_sub_auth_rid (sid) & 0xff); @@ -2682,21 +2688,8 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, cyg_ldap *pldap) fully_qualified_name = true; acc_type = SidTypeUnknown; } - else if (sid_id_auth (sid) == 12 && sid_sub_auth (sid, 0) == 1) - { - /* Special AzureAD group SID which can't be resolved by - LookupAccountSid (ERROR_NONE_MAPPED). This is only allowed - as group entry, not as passwd entry. */ - if (is_passwd ()) - return NULL; - uid = gid = 0x1001; - wcpcpy (dom, L"AzureAD"); - wcpcpy (name = namebuf, L"Group"); - fully_qualified_name = true; - acc_type = SidTypeUnknown; - } - else if (sid_id_auth (sid) == 5 && - sid_sub_auth (sid, 0) == SECURITY_APPPOOL_ID_BASE_RID) + else if (sid_id_auth (sid) == 5 /* SECURITY_NT_AUTHORITY */ + && sid_sub_auth (sid, 0) == SECURITY_APPPOOL_ID_BASE_RID) { /* Special IIS APPPOOL group SID which can't be resolved by LookupAccountSid (ERROR_NONE_MAPPED). This is only allowed @@ -2728,6 +2721,24 @@ pwdgrp::fetch_account_from_windows (fetch_user_arg_t &arg, cyg_ldap *pldap) } acc_type = SidTypeUnknown; } + else if (sid_id_auth (sid) == 12 /* AzureAD ID */ + && sid_sub_auth (sid, 0) == 1 /* Azure ID base RID */) + { + /* Special AzureAD group SID which can't be resolved by + LookupAccountSid (ERROR_NONE_MAPPED). This is only allowed + as group entry, not as passwd entry. */ + if (is_passwd ()) + return NULL; + uid = gid = 0x1001; + wcpcpy (dom, L"AzureAD"); + wcpcpy (name = namebuf, L"Group"); + fully_qualified_name = true; + acc_type = SidTypeUnknown; + } + else if (sid_id_auth (sid) == 15 /* SECURITY_APP_PACKAGE_AUTHORITY */ + && sid_sub_auth (sid, 0) == SECURITY_CAPABILITY_BASE_RID) + /* Filter out Capability SIDs */ + return NULL; else if (sid_id_auth (sid) == 22) { /* Samba UNIX Users/Groups |