|
 |
1abbee |
From 573e86d7e9f0038044d5cba2a1a543e24b063a79 Mon Sep 17 00:00:00 2001
|
|
|
1abbee |
From: Aleksander Adamowski <olo@fb.com>
|
|
|
1abbee |
Date: Mon, 11 Jan 2016 15:26:41 -0800
|
|
|
1abbee |
Subject: [PATCH] Fix miscalculated buffer size and uses of size-unlimited
|
|
|
1abbee |
sprintf() function.
|
|
|
1abbee |
|
|
|
1abbee |
Not sure if this results in an exploitable buffer overflow, probably not
|
|
|
1abbee |
since the the int value is likely sanitized somewhere earlier and it's
|
|
|
1abbee |
being put through a bit mask shortly before being used.
|
|
|
1abbee |
|
|
|
1abbee |
Cherry-picked from: 13f5402c6b734ed4c2b3e8b7c3d3bf6d815e7661
|
|
|
1abbee |
Related: #1318994
|
|
|
1abbee |
---
|
|
|
1abbee |
src/journal/journald-syslog.c | 6 +++---
|
|
|
1abbee |
1 file changed, 3 insertions(+), 3 deletions(-)
|
|
|
1abbee |
|
|
|
1abbee |
diff --git a/src/journal/journald-syslog.c b/src/journal/journald-syslog.c
|
|
|
1abbee |
index 8602b4a..b499a0d 100644
|
|
|
1abbee |
--- a/src/journal/journald-syslog.c
|
|
|
1abbee |
+++ b/src/journal/journald-syslog.c
|
|
|
1abbee |
@@ -317,7 +317,7 @@ void server_process_syslog_message(
|
|
|
1abbee |
size_t label_len) {
|
|
|
1abbee |
|
|
|
1abbee |
char syslog_priority[sizeof("PRIORITY=") + DECIMAL_STR_MAX(int)],
|
|
|
1abbee |
- syslog_facility[sizeof("SYSLOG_FACILITY") + DECIMAL_STR_MAX(int)];
|
|
|
1abbee |
+ syslog_facility[sizeof("SYSLOG_FACILITY=") + DECIMAL_STR_MAX(int)];
|
|
|
1abbee |
const char *message = NULL, *syslog_identifier = NULL, *syslog_pid = NULL;
|
|
|
1abbee |
struct iovec iovec[N_IOVEC_META_FIELDS + 6];
|
|
|
1abbee |
unsigned n = 0;
|
|
|
1abbee |
@@ -348,11 +348,11 @@ void server_process_syslog_message(
|
|
|
1abbee |
|
|
|
1abbee |
IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog");
|
|
|
1abbee |
|
|
|
1abbee |
- sprintf(syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK);
|
|
|
1abbee |
+ snprintf(syslog_priority, sizeof(syslog_priority), "PRIORITY=%i", priority & LOG_PRIMASK);
|
|
|
1abbee |
IOVEC_SET_STRING(iovec[n++], syslog_priority);
|
|
|
1abbee |
|
|
|
1abbee |
if (priority & LOG_FACMASK) {
|
|
|
1abbee |
- sprintf(syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority));
|
|
|
1abbee |
+ snprintf(syslog_facility, sizeof(syslog_facility), "SYSLOG_FACILITY=%i", LOG_FAC(priority));
|
|
|
1abbee |
IOVEC_SET_STRING(iovec[n++], syslog_facility);
|
|
|
1abbee |
}
|
|
|
1abbee |
|