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From 58b6e97a9eef866e9e479fb781aaaf59fb11ef36 Mon Sep 17 00:00:00 2001
From: Christian Göttsche <cgzones@googlemail.com>
Date: Mon Apr 25 12:17:40 2022 +0200
Subject: [PATCH 1/2] passwd: erase password copy on all error branches
CVE: CVE-2023-4641
Upstream-Status: Backport [https://github.com/shadow-maint/shadow/commit/58b6e97a9eef866e9e479fb781aaaf59fb11ef36]
Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com>
---
src/passwd.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/passwd.c b/src/passwd.c
index 80531ec..8c6f81a 100644
--- a/src/passwd.c
+++ b/src/passwd.c
@@ -289,6 +289,7 @@ static int new_password (const struct passwd *pw)
cp = getpass (_("New password: "));
if (NULL == cp) {
memzero (orig, sizeof orig);
+ memzero (pass, sizeof pass);
return -1;
}
if (warned && (strcmp (pass, cp) != 0)) {
@@ -316,6 +317,7 @@ static int new_password (const struct passwd *pw)
cp = getpass (_("Re-enter new password: "));
if (NULL == cp) {
memzero (orig, sizeof orig);
+ memzero (pass, sizeof pass);
return -1;
}
if (strcmp (cp, pass) != 0) {
--
2.40.0
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