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| author | Christian Göttsche <cgzones@googlemail.com> | 2023-01-30 17:56:58 +0100 |
|---|---|---|
| committer | Christian Göttsche <cgzones@googlemail.com> | 2023-02-28 15:13:15 +0100 |
| commit | bcba17939e1b1a568cd4a764534cde74d37078cc (patch) | |
| tree | 4f3630f53cd52c2afa59435f5d36db260c1bf4a1 /modules/pam_unix/support.h | |
| parent | 87ff7a12a55c38873905636eb8d29b4542d828f5 (diff) | |
| download | pam-bcba17939e1b1a568cd4a764534cde74d37078cc.tar.gz pam-bcba17939e1b1a568cd4a764534cde74d37078cc.tar.bz2 pam-bcba17939e1b1a568cd4a764534cde74d37078cc.zip | |
modules: make use of secure memory erasure
Use empty initialization of structs to minimize the memset() usage, to
reduce the amount of calls which are not sensitive.
Non trivial changes:
- pam_env:
* erase environment variables where possible
- pam_exec:
* erase responce on error
* erase auth token
- pam_pwhistory:
* erase buffers containing old passwords
- pam_selinux: skip overwriting data structure consisting of only
pointers to insensitive data, which also gets free'd afterwards (so
it currently does not protect against double-free or use-after-free on
the member pointers)
- pam_unix: erase cipher data in more places
- pam_userdb: erase password hashes
Diffstat (limited to 'modules/pam_unix/support.h')
| -rw-r--r-- | modules/pam_unix/support.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/modules/pam_unix/support.h b/modules/pam_unix/support.h index 19754dc1..81054002 100644 --- a/modules/pam_unix/support.h +++ b/modules/pam_unix/support.h @@ -151,10 +151,10 @@ static const UNIX_Ctrls unix_args[UNIX_CTRLS_] = /* use this to free strings. ESPECIALLY password strings */ -#define _pam_delete(xx) \ -{ \ - _pam_overwrite(xx); \ - _pam_drop(xx); \ +#define _pam_delete(xx) \ +{ \ + pam_overwrite_string(xx); \ + _pam_drop(xx); \ } extern int _make_remark(pam_handle_t * pamh, unsigned long long ctrl, |