libconfuse: patch CVE-2022-40320

Pick patch per [1] poiting to [2] pointing to [3].

[1] https://nvd.nist.gov/vuln/detail/CVE-2022-40320
[2] https://github.com/libconfuse/libconfuse/issues/163
[3] https://github.com/libconfuse/libconfuse/commit/d73777c2c3566fb2647727bb56d9a2295b81669b

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 43 insertions, 0 deletions

diff --git a/meta-oe/recipes-support/libconfuse/files/CVE-2022-40320.patch b/meta-oe/recipes-support/libconfuse/files/CVE-2022-40320.patch
new file mode 100755
index 0000000000..52296b9c0f
--- /dev/null
+++ b/meta-oe/recipes-support/libconfuse/files/CVE-2022-40320.patch
@@ -0,0 +1,42 @@
+From d73777c2c3566fb2647727bb56d9a2295b81669b Mon Sep 17 00:00:00 2001
+From: Joachim Wiberg <troglobit@gmail.com>
+Date: Fri, 2 Sep 2022 16:12:46 +0200
+Subject: [PATCH] Fix #163: unterminated username used with getpwnam()
+
+Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
+
+CVE: CVE-2022-40320
+Upstream-Status: Backport [https://github.com/libconfuse/libconfuse/commit/d73777c2c3566fb2647727bb56d9a2295b81669b]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ src/confuse.c | 9 ++++++---
+ 1 file changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/src/confuse.c b/src/confuse.c
+index 6d1fdbd..05566b5 100644
+--- a/src/confuse.c
++++ b/src/confuse.c
+@@ -1872,17 +1872,20 @@ DLLIMPORT char *cfg_tilde_expand(const char *filename)
+                        file = filename + 1;
+                } else {
+                        /* ~user or ~user/path */
+-                       char *user;
++                       char *user; /* ~user or ~user/path */
++                       size_t len;
+ 
+                        file = strchr(filename, '/');
+                        if (file == 0)
+                                file = filename + strlen(filename);
+ 
+-                       user = malloc(file - filename);
++                       len = file - filename - 1;
++                       user = malloc(len + 1);
+                        if (!user)
+                                return NULL;
+ 
+-                       strncpy(user, filename + 1, file - filename - 1);
++                       strncpy(user, &filename[1], len);
++                       user[len] = 0;
+                        passwd = getpwnam(user);
+                        free(user);
+                }
diff --git a/meta-oe/recipes-support/libconfuse/libconfuse_3.3.bb b/meta-oe/recipes-support/libconfuse/libconfuse_3.3.bb
index e6f28c7b69..0e2f1f27b3 100644
--- a/meta-oe/recipes-support/libconfuse/libconfuse_3.3.bb
+++ b/meta-oe/recipes-support/libconfuse/libconfuse_3.3.bb
@@ -6,6 +6,7 @@ SRC_URI = "https://github.com/libconfuse/libconfuse/releases/download/v${PV}/con
 SRC_URI[sha256sum] = "3a59ded20bc652eaa8e6261ab46f7e483bc13dad79263c15af42ecbb329707b8"
 
 SRC_URI += "file://0001-only-apply-search-path-logic-to-relative-pathnames.patch"
+SRC_URI += "file://CVE-2022-40320.patch"
 
 inherit autotools-brokensep pkgconfig gettext