diff options
author | Matthieu Herrb <matthieu.herrb@laas.fr> | 2011-10-17 22:26:12 +0200 |
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committer | Julien Cristau <jcristau@debian.org> | 2011-10-29 18:59:26 +0200 |
commit | 4185af737d7ae9aeb90893ef93343f4672f3222c (patch) | |
tree | 74387385d941772a4764ff60db4c36ed3f96bfb0 | |
parent | d7ca4b7139ef05bf6562341bea75c58249b8586d (diff) |
Fix CVE-2011-4028: File disclosure vulnerability.
use O_NOFOLLOW to open the existing lock file, so symbolic links
aren't followed, thus avoid revealing if it point to an existing
file.
Signed-off-by: Matthieu Herrb <matthieu.herrb@laas.fr>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
(cherry picked from commit 6ba44b91e37622ef8c146d8f2ac92d708a18ed34)
-rw-r--r-- | os/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/os/utils.c b/os/utils.c index 13d3b3ff0..3b6c7cda5 100644 --- a/os/utils.c +++ b/os/utils.c @@ -336,7 +336,7 @@ LockServer(void) /* * Read the pid from the existing file */ - lfd = open(LockFile, O_RDONLY); + lfd = open(LockFile, O_RDONLY|O_NOFOLLOW); if (lfd < 0) { unlink(tmp); FatalError("Can't read lock file %s\n", LockFile); |