diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/src/deliver.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/src/deliver.c b/src/src/deliver.c index 59fbeeaf9..72751c2dc 100644 --- a/src/src/deliver.c +++ b/src/src/deliver.c @@ -328,6 +328,10 @@ Returns: a file descriptor, or -1 (with errno set) static int open_msglog_file(uschar *filename, int mode, uschar **error) { +if (Ustrstr(filename, US"/../")) + log_write(0, LOG_MAIN|LOG_PANIC, + "Attempt to open msglog file path with upward-traversal: '%s'\n", filename); + for (int i = 2; i > 0; i--) { int fd = Uopen(filename, |