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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-02-12 22:32:43 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-02-12 22:32:43 +0000 |
| commit | 226a980bb0dfaaa4cee3650889218483aa9ec632 (patch) | |
| tree | 8a8df23e3b21ed9d377b5805bfaaa372e3a074e4 /src/backend/commands/variable.c | |
| parent | 2a5180c26e4769171a64cbc6827488fbcf349e38 (diff) | |
| download | postgresql-226a980bb0dfaaa4cee3650889218483aa9ec632.tar.gz postgresql-226a980bb0dfaaa4cee3650889218483aa9ec632.zip | |
Fix bug that allowed any logged-in user to SET ROLE to any other database user
id (CVE-2006-0553). Also fix related bug in SET SESSION AUTHORIZATION that
allows unprivileged users to crash the server, if it has been compiled with
Asserts enabled. The escalation-of-privilege risk exists only in 8.1.0-8.1.2.
However, the Assert-crash risk exists in all releases back to 7.3.
Thanks to Akio Ishida for reporting this problem.
Diffstat (limited to 'src/backend/commands/variable.c')
| -rw-r--r-- | src/backend/commands/variable.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/commands/variable.c b/src/backend/commands/variable.c index 38a10bd605b..6d36e5ce1ac 100644 --- a/src/backend/commands/variable.c +++ b/src/backend/commands/variable.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/variable.c,v 1.115 2005/11/22 18:17:10 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/commands/variable.c,v 1.116 2006/02/12 22:32:42 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -586,7 +586,9 @@ assign_client_encoding(const char *value, bool doit, GucSource source) * by the numeric oid, followed by a comma, followed by the role name. * This cannot be confused with a plain role name because of the NAMEDATALEN * limit on names, so we can tell whether we're being passed an initial - * role name or a saved/restored value. + * role name or a saved/restored value. (NOTE: we rely on guc.c to have + * properly truncated any incoming value, but not to truncate already-stored + * values. See GUC_IS_NAME processing.) */ extern char *session_authorization_string; /* in guc.c */ |