ec4b113c4d
Fix CVE-2023-6918 Missing checks for return values for digests Fix CVE-2023-6004 ProxyCommand/ProxyJump features allow injection of malicious code through hostname Resolves: RHEL-19310, RHEL-19691, RHEL-17245 Signed-off-by: Sahana Prasad <sahana@redhat.com>
95 lines
4.0 KiB
Diff
95 lines
4.0 KiB
Diff
From bccb8513fa4a836aef0519d65eb33bb212606fe1 Mon Sep 17 00:00:00 2001
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From: Thomas Baag <libssh-git@spam.b2ag.de>
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Date: Wed, 21 Sep 2022 20:55:27 +0200
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Subject: [PATCH] config: Escape brackets in ProxyCommand build from ProxyJump
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Missing escaping results in syntax errors in Zsh shell because of square
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brackets getting interpreted as being a pattern for globbing.
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Signed-off-by: Thomas Baag <libssh-git@spam.b2ag.de>
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Reviewed-by: Jakub Jelen <jjelen@redhat.com>
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---
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src/config.c | 2 +-
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tests/unittests/torture_config.c | 14 +++++++-------
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2 files changed, 8 insertions(+), 8 deletions(-)
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diff --git a/src/config.c b/src/config.c
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index c048418ec..308928429 100644
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--- a/src/config.c
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+++ b/src/config.c
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@@ -491,7 +491,7 @@ ssh_config_parse_proxy_jump(ssh_session session, const char *s, bool do_parsing)
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if (hostname != NULL && do_parsing) {
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char com[512] = {0};
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- rv = snprintf(com, sizeof(com), "ssh%s%s%s%s%s%s -W [%%h]:%%p %s",
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+ rv = snprintf(com, sizeof(com), "ssh%s%s%s%s%s%s -W '[%%h]:%%p' %s",
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username ? " -l " : "",
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username ? username : "",
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port ? " -p " : "",
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diff --git a/tests/unittests/torture_config.c b/tests/unittests/torture_config.c
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index 31dadae37..5ff20c99a 100644
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--- a/tests/unittests/torture_config.c
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+++ b/tests/unittests/torture_config.c
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@@ -649,7 +649,7 @@ static void torture_config_unknown(void **state,
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/* test corner cases */
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_parse_config(session, file, string, SSH_OK);
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assert_string_equal(session->opts.ProxyCommand,
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- "ssh -W [%h]:%p many-spaces.com");
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+ "ssh -W '[%h]:%p' many-spaces.com");
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assert_string_equal(session->opts.host, "equal.sign");
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ret = ssh_config_parse_file(session, "/etc/ssh/ssh_config");
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@@ -945,28 +945,28 @@ static void torture_config_proxyjump(void **state,
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torture_reset_config(session);
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ssh_options_set(session, SSH_OPTIONS_HOST, "simple");
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_parse_config(session, file, string, SSH_OK);
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- assert_string_equal(session->opts.ProxyCommand, "ssh -W [%h]:%p jumpbox");
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+ assert_string_equal(session->opts.ProxyCommand, "ssh -W '[%h]:%p' jumpbox");
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/* With username */
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torture_reset_config(session);
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ssh_options_set(session, SSH_OPTIONS_HOST, "user");
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_parse_config(session, file, string, SSH_OK);
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assert_string_equal(session->opts.ProxyCommand,
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- "ssh -l user -W [%h]:%p jumpbox");
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+ "ssh -l user -W '[%h]:%p' jumpbox");
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/* With port */
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torture_reset_config(session);
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ssh_options_set(session, SSH_OPTIONS_HOST, "port");
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_parse_config(session, file, string, SSH_OK);
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assert_string_equal(session->opts.ProxyCommand,
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- "ssh -p 2222 -W [%h]:%p jumpbox");
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+ "ssh -p 2222 -W '[%h]:%p' jumpbox");
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/* Two step jump */
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torture_reset_config(session);
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ssh_options_set(session, SSH_OPTIONS_HOST, "two-step");
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_parse_config(session, file, string, SSH_OK);
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assert_string_equal(session->opts.ProxyCommand,
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- "ssh -l u1 -p 222 -J u2@second:33 -W [%h]:%p first");
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+ "ssh -l u1 -p 222 -J u2@second:33 -W '[%h]:%p' first");
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/* none */
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torture_reset_config(session);
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@@ -985,14 +985,14 @@ static void torture_config_proxyjump(void **state,
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ssh_options_set(session, SSH_OPTIONS_HOST, "only-jump");
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_parse_config(session, file, string, SSH_OK);
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assert_string_equal(session->opts.ProxyCommand,
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- "ssh -W [%h]:%p jumpbox");
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+ "ssh -W '[%h]:%p' jumpbox");
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/* IPv6 address */
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torture_reset_config(session);
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ssh_options_set(session, SSH_OPTIONS_HOST, "ipv6");
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_parse_config(session, file, string, SSH_OK);
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assert_string_equal(session->opts.ProxyCommand,
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- "ssh -W [%h]:%p 2620:52:0::fed");
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+ "ssh -W '[%h]:%p' 2620:52:0::fed");
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/* Multiple @ is allowed in second jump */
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config = "Host allowed-hostname\n"
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--
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GitLab
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