From 972dcfcdbfe75dcfeb777150c136576cf1a71e99 Mon Sep 17 00:00:00 2001 From: Tudor Florea Date: Fri, 9 Oct 2015 22:59:03 +0200 Subject: initial commit for Enea Linux 5.0 arm Signed-off-by: Tudor Florea --- ...mp-fix-potential-directory-traversal-issu.patch | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 meta/recipes-extended/pam/libpam/pam_timestamp-fix-potential-directory-traversal-issu.patch (limited to 'meta/recipes-extended/pam/libpam/pam_timestamp-fix-potential-directory-traversal-issu.patch') diff --git a/meta/recipes-extended/pam/libpam/pam_timestamp-fix-potential-directory-traversal-issu.patch b/meta/recipes-extended/pam/libpam/pam_timestamp-fix-potential-directory-traversal-issu.patch new file mode 100644 index 0000000000..06cca13abe --- /dev/null +++ b/meta/recipes-extended/pam/libpam/pam_timestamp-fix-potential-directory-traversal-issu.patch @@ -0,0 +1,63 @@ +From 9dcead87e6d7f66d34e7a56d11a30daca367dffb Mon Sep 17 00:00:00 2001 +From: "Dmitry V. Levin" +Date: Wed, 26 Mar 2014 22:17:23 +0000 +Subject: [PATCH] pam_timestamp: fix potential directory traversal issue + (ticket #27) + +commit 9dcead87e6d7f66d34e7a56d11a30daca367dffb upstream + +pam_timestamp uses values of PAM_RUSER and PAM_TTY as components of +the timestamp pathname it creates, so extra care should be taken to +avoid potential directory traversal issues. + +* modules/pam_timestamp/pam_timestamp.c (check_tty): Treat +"." and ".." tty values as invalid. +(get_ruser): Treat "." and ".." ruser values, as well as any ruser +value containing '/', as invalid. + +Fixes CVE-2014-2583. + +Reported-by: Sebastian Krahmer + +Upstream-Status: Backport + +Signed-off-by: Yue Tao +Signed-off-by: Wenzong Fan +--- + modules/pam_timestamp/pam_timestamp.c | 13 ++++++++++++- + 1 files changed, 12 insertions(+), 1 deletions(-) + +diff --git a/modules/pam_timestamp/pam_timestamp.c b/modules/pam_timestamp/pam_timestamp.c +index 5193733..b3f08b1 100644 +--- a/modules/pam_timestamp/pam_timestamp.c ++++ b/modules/pam_timestamp/pam_timestamp.c +@@ -158,7 +158,7 @@ check_tty(const char *tty) + tty = strrchr(tty, '/') + 1; + } + /* Make sure the tty wasn't actually a directory (no basename). */ +- if (strlen(tty) == 0) { ++ if (!strlen(tty) || !strcmp(tty, ".") || !strcmp(tty, "..")) { + return NULL; + } + return tty; +@@ -243,6 +243,17 @@ get_ruser(pam_handle_t *pamh, char *ruserbuf, size_t ruserbuflen) + if (pwd != NULL) { + ruser = pwd->pw_name; + } ++ } else { ++ /* ++ * This ruser is used by format_timestamp_name as a component ++ * of constructed timestamp pathname, so ".", "..", and '/' ++ * are disallowed to avoid potential path traversal issues. ++ */ ++ if (!strcmp(ruser, ".") || ++ !strcmp(ruser, "..") || ++ strchr(ruser, '/')) { ++ ruser = NULL; ++ } + } + if (ruser == NULL || strlen(ruser) >= ruserbuflen) { + *ruserbuf = '\0'; +-- +1.7.5.4 + -- cgit v1.2.3-54-g00ecf