--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: bullseye-pu: package inetutils/2:2.0-1+deb11u2
- From: Guillem Jover <guillem@debian.org>
- Date: Wed, 23 Aug 2023 12:44:25 +0200
- Message-id: <ZOXjCVrxJ2kD/2bY@thunder.hadrons.org>
Package: release.debian.org
Severity: normal
Tags: bullseye
User: release.debian.org@packages.debian.org
Usertags: pu
X-Debbugs-Cc: inetutils@packages.debian.org, team@security.debian.org
Control: affects -1 + src:inetutils
Hi!
[ Reason ]
This update fixes a minor security issue, that the security team did
not feel worth a DSA. It is now fixed already in unstable and testing.
[ Impact ]
It could lead to security issues.
[ Tests ]
The only relevant part of the patch is the one involving ftpd, which
still works as expected after the patch.
[ Risks ]
The risks seem minimal, as it is only adding checks for the return
codes of the set*id() functions.
[ Checklist ]
[√] *all* changes are documented in the d/changelog
[√] I reviewed all changes and I approve them
[√] attach debdiff against the package in (old)stable
[√] the issue is verified as fixed in unstable
[ Changes ]
* Add patch from upstream to check return values for set*id() functions.
Fixes CVE-2023-40303. (Closes: #1049365)
Thanks,
Guillem
diff -Nru inetutils-2.0/debian/changelog inetutils-2.0/debian/changelog
--- inetutils-2.0/debian/changelog 2022-08-30 13:34:41.000000000 +0200
+++ inetutils-2.0/debian/changelog 2023-08-23 12:05:48.000000000 +0200
@@ -1,3 +1,10 @@
+inetutils (2:2.0-1+deb11u2) bullseye; urgency=medium
+
+ * Add patch from upstream to check return values for set*id() functions.
+ Fixes CVE-2023-40303. (Closes: #1049365)
+
+ -- Guillem Jover <guillem@debian.org> Wed, 23 Aug 2023 12:05:48 +0200
+
inetutils (2:2.0-1+deb11u1) bullseye; urgency=medium
* telnet: Add checks for option reply parsing limits causing buffer
diff -Nru inetutils-2.0/debian/patches/0002-ftpd-rcp-rlogin-rsh-rshd-uucpd-fix-check-set-id-retu.patch inetutils-2.0/debian/patches/0002-ftpd-rcp-rlogin-rsh-rshd-uucpd-fix-check-set-id-retu.patch
--- inetutils-2.0/debian/patches/0002-ftpd-rcp-rlogin-rsh-rshd-uucpd-fix-check-set-id-retu.patch 1970-01-01 01:00:00.000000000 +0100
+++ inetutils-2.0/debian/patches/0002-ftpd-rcp-rlogin-rsh-rshd-uucpd-fix-check-set-id-retu.patch 2023-08-23 12:05:48.000000000 +0200
@@ -0,0 +1,283 @@
+From 8dd3c8bae7f95fc096bd36efdf62cc33250074dc Mon Sep 17 00:00:00 2001
+From: Jeffrey Bencteux <jeffbencteux@gmail.com>
+Date: Fri, 30 Jun 2023 19:02:45 +0200
+Subject: [PATCH 2/2] ftpd,rcp,rlogin,rsh,rshd,uucpd: fix: check set*id()
+ return values
+
+Several setuid(), setgid(), seteuid() and setguid() return values
+were not checked in ftpd/rcp/rlogin/rsh/rshd/uucpd code potentially
+leading to potential security issues.
+
+Signed-off-by: Jeffrey Bencteux <jeffbencteux@gmail.com>
+Signed-off-by: Simon Josefsson <simon@josefsson.org>
+Fixes: CVE-2023-40303
+Closes: #1049365
+Forwarded: not-needed
+Origin: upstream, commit:e4e65c03f4c11292a3e40ef72ca3f194c8bffdd6
+---
+ ftpd/ftpd.c | 10 +++++++---
+ src/rcp.c | 39 +++++++++++++++++++++++++++++++++------
+ src/rlogin.c | 11 +++++++++--
+ src/rsh.c | 25 +++++++++++++++++++++----
+ src/rshd.c | 20 +++++++++++++++++---
+ src/uucpd.c | 15 +++++++++++++--
+ 6 files changed, 100 insertions(+), 20 deletions(-)
+
+diff --git a/ftpd/ftpd.c b/ftpd/ftpd.c
+index 92b2cca5..28dd523f 100644
+--- a/ftpd/ftpd.c
++++ b/ftpd/ftpd.c
+@@ -862,7 +862,9 @@ end_login (struct credentials *pcred)
+ char *remotehost = pcred->remotehost;
+ int atype = pcred->auth_type;
+
+- seteuid ((uid_t) 0);
++ if (seteuid ((uid_t) 0) == -1)
++ _exit (EXIT_FAILURE);
++
+ if (pcred->logged_in)
+ {
+ logwtmp_keep_open (ttyline, "", "");
+@@ -1151,7 +1153,8 @@ getdatasock (const char *mode)
+
+ if (data >= 0)
+ return fdopen (data, mode);
+- seteuid ((uid_t) 0);
++ if (seteuid ((uid_t) 0) == -1)
++ _exit (EXIT_FAILURE);
+ s = socket (ctrl_addr.ss_family, SOCK_STREAM, 0);
+ if (s < 0)
+ goto bad;
+@@ -1978,7 +1981,8 @@ passive (int epsv, int af)
+ else /* !AF_INET6 */
+ ((struct sockaddr_in *) &pasv_addr)->sin_port = 0;
+
+- seteuid ((uid_t) 0);
++ if (seteuid ((uid_t) 0) == -1)
++ _exit (EXIT_FAILURE);
+ if (bind (pdata, (struct sockaddr *) &pasv_addr, pasv_addrlen) < 0)
+ {
+ if (seteuid ((uid_t) cred.uid))
+diff --git a/src/rcp.c b/src/rcp.c
+index 75adb253..cdcf8500 100644
+--- a/src/rcp.c
++++ b/src/rcp.c
+@@ -345,14 +345,23 @@ main (int argc, char *argv[])
+ if (from_option)
+ { /* Follow "protocol", send data. */
+ response ();
+- setuid (userid);
++
++ if (setuid (userid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (setuid() failed)");
++ }
++
+ source (argc, argv);
+ exit (errs);
+ }
+
+ if (to_option)
+ { /* Receive data. */
+- setuid (userid);
++ if (setuid (userid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (setuid() failed)");
++ }
++
+ sink (argc, argv);
+ exit (errs);
+ }
+@@ -537,7 +546,11 @@ toremote (char *targ, int argc, char *argv[])
+ if (response () < 0)
+ exit (EXIT_FAILURE);
+ free (bp);
+- setuid (userid);
++
++ if (setuid (userid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (setuid() failed)");
++ }
+ }
+ source (1, argv + i);
+ close (rem);
+@@ -630,7 +643,12 @@ tolocal (int argc, char *argv[])
+ ++errs;
+ continue;
+ }
+- seteuid (userid);
++
++ if (seteuid (userid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (seteuid() failed)");
++ }
++
+ #if defined IP_TOS && defined IPPROTO_IP && defined IPTOS_THROUGHPUT
+ sslen = sizeof (ss);
+ (void) getpeername (rem, (struct sockaddr *) &ss, &sslen);
+@@ -643,7 +661,12 @@ tolocal (int argc, char *argv[])
+ #endif
+ vect[0] = target;
+ sink (1, vect);
+- seteuid (effuid);
++
++ if (seteuid (effuid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (seteuid() failed)");
++ }
++
+ close (rem);
+ rem = -1;
+ #ifdef SHISHI
+@@ -1441,7 +1464,11 @@ susystem (char *s, int userid)
+ return (127);
+
+ case 0:
+- setuid (userid);
++ if (setuid (userid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (setuid() failed)");
++ }
++
+ execl (PATH_BSHELL, "sh", "-c", s, NULL);
+ _exit (127);
+ }
+diff --git a/src/rlogin.c b/src/rlogin.c
+index aa6426fb..c543de0c 100644
+--- a/src/rlogin.c
++++ b/src/rlogin.c
+@@ -647,8 +647,15 @@ try_connect:
+ /* Now change to the real user ID. We have to be set-user-ID root
+ to get the privileged port that rcmd () uses. We now want, however,
+ to run as the real user who invoked us. */
+- seteuid (uid);
+- setuid (uid);
++ if (seteuid (uid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (seteuid() failed)");
++ }
++
++ if (setuid (uid) == -1)
++ {
++ error (EXIT_FAILURE, 0, "Could not drop privileges (setuid() failed)");
++ }
+
+ doit (&osmask); /* The old mask will activate SIGURG and SIGUSR1! */
+
+diff --git a/src/rsh.c b/src/rsh.c
+index 2d622ca4..6f60667d 100644
+--- a/src/rsh.c
++++ b/src/rsh.c
+@@ -276,8 +276,17 @@ main (int argc, char **argv)
+ {
+ if (asrsh)
+ *argv = (char *) "rlogin";
+- seteuid (getuid ());
+- setuid (getuid ());
++
++ if (seteuid (getuid ()) == -1)
++ {
++ error (EXIT_FAILURE, errno, "seteuid() failed");
++ }
++
++ if (setuid (getuid ()) == -1)
++ {
++ error (EXIT_FAILURE, errno, "setuid() failed");
++ }
++
+ execv (PATH_RLOGIN, argv);
+ error (EXIT_FAILURE, errno, "cannot execute %s", PATH_RLOGIN);
+ }
+@@ -541,8 +550,16 @@ try_connect:
+ error (0, errno, "setsockopt DEBUG (ignored)");
+ }
+
+- seteuid (uid);
+- setuid (uid);
++ if (seteuid (uid) == -1)
++ {
++ error (EXIT_FAILURE, errno, "seteuid() failed");
++ }
++
++ if (setuid (uid) == -1)
++ {
++ error (EXIT_FAILURE, errno, "setuid() failed");
++ }
++
+ #ifdef HAVE_SIGACTION
+ sigemptyset (&sigs);
+ sigaddset (&sigs, SIGINT);
+diff --git a/src/rshd.c b/src/rshd.c
+index d1c0d0cd..707790e7 100644
+--- a/src/rshd.c
++++ b/src/rshd.c
+@@ -1847,8 +1847,18 @@ doit (int sockfd, struct sockaddr *fromp, socklen_t fromlen)
+ pwd->pw_shell = PATH_BSHELL;
+
+ /* Set the gid, then uid to become the user specified by "locuser" */
+- setegid ((gid_t) pwd->pw_gid);
+- setgid ((gid_t) pwd->pw_gid);
++ if (setegid ((gid_t) pwd->pw_gid) == -1)
++ {
++ rshd_error ("Cannot drop privileges (setegid() failed)\n");
++ exit (EXIT_FAILURE);
++ }
++
++ if (setgid ((gid_t) pwd->pw_gid) == -1)
++ {
++ rshd_error ("Cannot drop privileges (setgid() failed)\n");
++ exit (EXIT_FAILURE);
++ }
++
+ #ifdef HAVE_INITGROUPS
+ initgroups (pwd->pw_name, pwd->pw_gid); /* BSD groups */
+ #endif
+@@ -1870,7 +1880,11 @@ doit (int sockfd, struct sockaddr *fromp, socklen_t fromlen)
+ }
+ #endif /* WITH_PAM */
+
+- setuid ((uid_t) pwd->pw_uid);
++ if (setuid ((uid_t) pwd->pw_uid) == -1)
++ {
++ rshd_error ("Cannot drop privileges (setuid() failed)\n");
++ exit (EXIT_FAILURE);
++ }
+
+ /* We'll execute the client's command in the home directory
+ * of locuser. Note, that the chdir must be executed after
+diff --git a/src/uucpd.c b/src/uucpd.c
+index 107589e1..29cfce35 100644
+--- a/src/uucpd.c
++++ b/src/uucpd.c
+@@ -252,7 +252,12 @@ doit (struct sockaddr *sap, socklen_t salen)
+ snprintf (Username, sizeof (Username), "USER=%s", user);
+ snprintf (Logname, sizeof (Logname), "LOGNAME=%s", user);
+ dologin (pw, sap, salen);
+- setgid (pw->pw_gid);
++
++ if (setgid (pw->pw_gid) == -1)
++ {
++ fprintf (stderr, "setgid() failed");
++ return;
++ }
+ #ifdef HAVE_INITGROUPS
+ initgroups (pw->pw_name, pw->pw_gid);
+ #endif
+@@ -261,7 +266,13 @@ doit (struct sockaddr *sap, socklen_t salen)
+ fprintf (stderr, "Login incorrect.");
+ return;
+ }
+- setuid (pw->pw_uid);
++
++ if (setuid (pw->pw_uid) == -1)
++ {
++ fprintf (stderr, "setuid() failed");
++ return;
++ }
++
+ execl (uucico_location, "uucico", NULL);
+ perror ("uucico server: execl");
+ }
+--
+2.40.1
+
diff -Nru inetutils-2.0/debian/patches/series inetutils-2.0/debian/patches/series
--- inetutils-2.0/debian/patches/series 2022-08-30 13:34:10.000000000 +0200
+++ inetutils-2.0/debian/patches/series 2023-08-23 12:05:48.000000000 +0200
@@ -1,3 +1,5 @@
+# Upstream git
+0002-ftpd-rcp-rlogin-rsh-rshd-uucpd-fix-check-set-id-retu.patch
# Local patches
0001-inetd-Change-protocol-semantics-in-inetd.conf.patch
0002-build-Disable-GFDL-info-files-and-useless-man-pages.patch
--- End Message ---