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| author | Noah Misch <noah@leadboat.com> | 2016-02-05 20:22:51 -0500 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2016-02-05 20:23:07 -0500 |
| commit | ed6deeb7a0dd9a8636309d0d8f6033db9fcc55ab (patch) | |
| tree | 12d557eb3b119bb4bf4a521889e389fb018c6273 | |
| parent | 31b792f61448c862bd32dbb4fa9dfd528fda646c (diff) | |
| download | postgresql-ed6deeb7a0dd9a8636309d0d8f6033db9fcc55ab.tar.gz | |
Force certain "pljava" custom GUCs to be PGC_SUSET.
Future PL/Java versions will close CVE-2016-0766 by making these GUCs
PGC_SUSET. This PostgreSQL change independently mitigates that PL/Java
vulnerability, helping sites that update PostgreSQL more frequently than
PL/Java. Back-patch to 9.1 (all supported versions).
| -rw-r--r-- | src/backend/utils/misc/guc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c index 406e859ca2..14d016d29a 100644 --- a/src/backend/utils/misc/guc.c +++ b/src/backend/utils/misc/guc.c @@ -7076,6 +7076,17 @@ init_custom_variable(const char *name, !process_shared_preload_libraries_in_progress) elog(FATAL, "cannot create PGC_POSTMASTER variables after startup"); + /* + * Before pljava commit 398f3b876ed402bdaec8bc804f29e2be95c75139 + * (2015-12-15), two of that module's PGC_USERSET variables facilitated + * trivial escalation to superuser privileges. Restrict the variables to + * protect sites that have yet to upgrade pljava. + */ + if (context == PGC_USERSET && + (strcmp(name, "pljava.classpath") == 0 || + strcmp(name, "pljava.vmoptions") == 0)) + context = PGC_SUSET; + gen = (struct config_generic *) guc_malloc(ERROR, sz); memset(gen, 0, sz); |