Merge tag 'v2.47.2' into vfs-2.47.2

Git 2.47.2

Signed-off-by: Johannes Schindelin <[email protected]>

Documentation/RelNotes/2.40.4.txt

@@ -0,0 +1,5 @@
+Git v2.40.4 Release Notes
+=========================
+
+This release lets Git refuse to accept URLs that contain control
+sequences.  This addresses CVE-2024-50349 and CVE-2024-52006.

Documentation/RelNotes/2.41.3.txt

@@ -0,0 +1,6 @@
+Git v2.41.3 Release Notes
+=========================
+
+This release merges up the fix that appears in v2.40.4 to address
+the security issues CVE-2024-50349 and CVE-2024-52006; see the
+release notes for that version for details.

Documentation/RelNotes/2.42.4.txt

@@ -0,0 +1,6 @@
+Git v2.42.4 Release Notes
+=========================
+
+This release merges up the fix that appears in v2.40.4 and v2.41.3
+to address the security issues CVE-2024-50349 and CVE-2024-52006;
+see the release notes for these versions for details.

Documentation/RelNotes/2.43.6.txt

@@ -0,0 +1,7 @@
+Git v2.43.6 Release Notes
+=========================
+
+This release merges up the fix that appears in v2.40.4, v2.41.3
+and v2.42.4 to address the security issues CVE-2024-50349 and
+CVE-2024-52006; see the release notes for these versions for
+details.

Documentation/RelNotes/2.44.3.txt

@@ -0,0 +1,7 @@
+Git v2.44.3 Release Notes
+=========================
+
+This release merges up the fix that appears in v2.40.4, v2.41.3,
+v2.42.4 and v2.43.6 to address the security issues CVE-2024-50349
+and CVE-2024-52006; see the release notes for these versions
+for details.

Documentation/RelNotes/2.45.3.txt

@@ -1,7 +1,12 @@
 Git v2.45.3 Release Notes
 =========================
 
-This primarily is to backport various small fixes accumulated on the
+This release merges up the fix that appears in v2.40.4, v2.41.3,
+v2.42.4, v2.43.6 and v2.44.3 to address the security issues
+CVE-2024-50349 and CVE-2024-52006; see the release notes for
+these versions for details.
+
+This version also backports various small fixes accumulated on the
 'master' front during the development towards Git 2.46, the next
 feature release.
 

Documentation/RelNotes/2.46.3.txt

@@ -0,0 +1,6 @@
+Git v2.46.3 Release Notes
+=========================
+
+This release merges up the fix that appears in v2.40.4, v2.41.3, v2.42.4,
+v2.43.6, v2.44.3 and v2.45.3 to address the security issues CVE-2024-50349 and
+CVE-2024-52006; see the release notes for these versions for details.

Documentation/RelNotes/2.47.2.txt

@@ -0,0 +1,7 @@
+Git v2.47.2 Release Notes
+=========================
+
+This release merges up the fix that appears in v2.40.4, v2.41.3,
+v2.42.4, v2.43.6, v2.44.3, v2.45.3 and v2.46.3 to address the
+security issues CVE-2024-50349 and CVE-2024-52006; see the release
+notes for these versions for details.

Documentation/config/credential.txt

@@ -22,6 +22,17 @@ credential.useHttpPath::
 	or https URL to be important. Defaults to false. See
 	linkgit:gitcredentials[7] for more information.
 
+credential.sanitizePrompt::
+	By default, user names and hosts that are shown as part of the
+	password prompt are not allowed to contain control characters (they
+	will be URL-encoded by default). Configure this setting to `false` to
+	override that behavior.
+
+credential.protectProtocol::
+	By default, Carriage Return characters are not allowed in the protocol
+	that is used when Git talks to a credential helper. This setting allows
+	users to override this default.
+
 credential.username::
 	If no username is set for a network authentication, use this username
 	by default. See credential.<context>.* below, and

credential.c

@@ -12,7 +12,7 @@
 #include "sigchain.h"
 #include "strbuf.h"
 #include "urlmatch.h"
-#include "git-compat-util.h"
+#include "environment.h"
 #include "trace2.h"
 #include "repository.h"
 
@@ -129,6 +129,10 @@ static int credential_config_callback(const char *var, const char *value,
 	}
 	else if (!strcmp(key, "usehttppath"))
 		c->use_http_path = git_config_bool(var, value);
+	else if (!strcmp(key, "sanitizeprompt"))
+		c->sanitize_prompt = git_config_bool(var, value);
+	else if (!strcmp(key, "protectprotocol"))
+		c->protect_protocol = git_config_bool(var, value);
 
 	return 0;
 }
@@ -226,7 +230,8 @@ static void credential_format(struct credential *c, struct strbuf *out)
 		strbuf_addch(out, '@');
 	}
 	if (c->host)
-		strbuf_addstr(out, c->host);
+		strbuf_add_percentencode(out, c->host,
+					 STRBUF_ENCODE_HOST_AND_PORT);
 	if (c->path) {
 		strbuf_addch(out, '/');
 		strbuf_add_percentencode(out, c->path, 0);
@@ -240,7 +245,10 @@ static char *credential_ask_one(const char *what, struct credential *c,
 	struct strbuf prompt = STRBUF_INIT;
 	char *r;
 
-	credential_describe(c, &desc);
+	if (c->sanitize_prompt)
+		credential_format(c, &desc);
+	else
+		credential_describe(c, &desc);
 	if (desc.len)
 		strbuf_addf(&prompt, "%s for '%s': ", what, desc.buf);
 	else
@@ -381,7 +389,8 @@ int credential_read(struct credential *c, FILE *fp,
 	return 0;
 }
 
-static void credential_write_item(FILE *fp, const char *key, const char *value,
+static void credential_write_item(const struct credential *c,
+				  FILE *fp, const char *key, const char *value,
 				  int required)
 {
 	if (!value && required)
@@ -390,41 +399,45 @@ static void credential_write_item(FILE *fp, const char *key, const char *value,
 		return;
 	if (strchr(value, '\n'))
 		die("credential value for %s contains newline", key);
+	if (c->protect_protocol && strchr(value, '\r'))
+		die("credential value for %s contains carriage return\n"
+		    "If this is intended, set `credential.protectProtocol=false`",
+		    key);
 	fprintf(fp, "%s=%s\n", key, value);
 }
 
 void credential_write(const struct credential *c, FILE *fp,
 		      enum credential_op_type op_type)
 {
 	if (credential_has_capability(&c->capa_authtype, op_type))
-		credential_write_item(fp, "capability[]", "authtype", 0);
+		credential_write_item(c, fp, "capability[]", "authtype", 0);
 	if (credential_has_capability(&c->capa_state, op_type))
-		credential_write_item(fp, "capability[]", "state", 0);
+		credential_write_item(c, fp, "capability[]", "state", 0);
 
 	if (credential_has_capability(&c->capa_authtype, op_type)) {
-		credential_write_item(fp, "authtype", c->authtype, 0);
-		credential_write_item(fp, "credential", c->credential, 0);
+		credential_write_item(c, fp, "authtype", c->authtype, 0);
+		credential_write_item(c, fp, "credential", c->credential, 0);
 		if (c->ephemeral)
-			credential_write_item(fp, "ephemeral", "1", 0);
+			credential_write_item(c, fp, "ephemeral", "1", 0);
 	}
-	credential_write_item(fp, "protocol", c->protocol, 1);
-	credential_write_item(fp, "host", c->host, 1);
-	credential_write_item(fp, "path", c->path, 0);
-	credential_write_item(fp, "username", c->username, 0);
-	credential_write_item(fp, "password", c->password, 0);
-	credential_write_item(fp, "oauth_refresh_token", c->oauth_refresh_token, 0);
+	credential_write_item(c, fp, "protocol", c->protocol, 1);
+	credential_write_item(c, fp, "host", c->host, 1);
+	credential_write_item(c, fp, "path", c->path, 0);
+	credential_write_item(c, fp, "username", c->username, 0);
+	credential_write_item(c, fp, "password", c->password, 0);
+	credential_write_item(c, fp, "oauth_refresh_token", c->oauth_refresh_token, 0);
 	if (c->password_expiry_utc != TIME_MAX) {
 		char *s = xstrfmt("%"PRItime, c->password_expiry_utc);
-		credential_write_item(fp, "password_expiry_utc", s, 0);
+		credential_write_item(c, fp, "password_expiry_utc", s, 0);
 		free(s);
 	}
 	for (size_t i = 0; i < c->wwwauth_headers.nr; i++)
-		credential_write_item(fp, "wwwauth[]", c->wwwauth_headers.v[i], 0);
+		credential_write_item(c, fp, "wwwauth[]", c->wwwauth_headers.v[i], 0);
 	if (credential_has_capability(&c->capa_state, op_type)) {
 		if (c->multistage)
-			credential_write_item(fp, "continue", "1", 0);
+			credential_write_item(c, fp, "continue", "1", 0);
 		for (size_t i = 0; i < c->state_headers_to_send.nr; i++)
-			credential_write_item(fp, "state[]", c->state_headers_to_send.v[i], 0);
+			credential_write_item(c, fp, "state[]", c->state_headers_to_send.v[i], 0);
 	}
 }
 

credential.h

@@ -168,7 +168,9 @@ struct credential {
 		 multistage: 1,
 		 quit:1,
 		 use_http_path:1,
-		 username_from_proto:1;
+		 username_from_proto:1,
+		 sanitize_prompt:1,
+		 protect_protocol:1;
 
 	struct credential_capability capa_authtype;
 	struct credential_capability capa_state;
@@ -195,6 +197,8 @@ struct credential {
 	.wwwauth_headers = STRVEC_INIT, \
 	.state_headers = STRVEC_INIT, \
 	.state_headers_to_send = STRVEC_INIT, \
+	.sanitize_prompt = 1, \
+	.protect_protocol = 1, \
 }
 
 /* Initialize a credential structure, setting all fields to empty. */

strbuf.c

@@ -495,7 +495,9 @@ void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags)
 		unsigned char ch = src[i];
 		if (ch <= 0x1F || ch >= 0x7F ||
 		    (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) ||
-		    strchr(URL_UNSAFE_CHARS, ch))
+		    ((flags & STRBUF_ENCODE_HOST_AND_PORT) ?
+		     !isalnum(ch) && !strchr("-.:[]", ch) :
+		     !!strchr(URL_UNSAFE_CHARS, ch)))
 			strbuf_addf(dst, "%%%02X", (unsigned char)ch);
 		else
 			strbuf_addch(dst, ch);

strbuf.h

@@ -356,6 +356,7 @@ void strbuf_expand_bad_format(const char *format, const char *command);
 void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src);
 
 #define STRBUF_ENCODE_SLASH 1
+#define STRBUF_ENCODE_HOST_AND_PORT 2
 
 /**
  * Append the contents of a string to a strbuf, percent-encoding any characters

t/t0300-credentials.sh

@@ -77,6 +77,10 @@ test_expect_success 'setup helper scripts' '
 	test -z "$pexpiry" || echo password_expiry_utc=$pexpiry
 	EOF
 
+	write_script git-credential-cntrl-in-username <<-\EOF &&
+	printf "username=\\007latrix Lestrange\\n"
+	EOF
+
 	PATH="$PWD$PATH_SEP$PATH"
 '
 
@@ -697,6 +701,19 @@ test_expect_success 'match percent-encoded values in username' '
 	EOF
 '
 
+test_expect_success 'match percent-encoded values in hostname' '
+	test_config "credential.https://a%20b%20c/.helper" "$HELPER" &&
+	check fill <<-\EOF
+	url=https://a b c/
+	--
+	protocol=https
+	host=a b c
+	username=foo
+	password=bar
+	--
+	EOF
+'
+
 test_expect_success 'fetch with multiple path components' '
 	test_unconfig credential.helper &&
 	test_config credential.https://example.com/foo/repo.git.helper "verbatim foo bar" &&
@@ -886,6 +903,22 @@ test_expect_success 'url parser rejects embedded newlines' '
 	test_cmp expect stderr
 '
 
+test_expect_success 'url parser rejects embedded carriage returns' '
+	test_config credential.helper "!true" &&
+	test_must_fail git credential fill 2>stderr <<-\EOF &&
+	url=https://example%0d.com/
+	EOF
+	cat >expect <<-\EOF &&
+	fatal: credential value for host contains carriage return
+	If this is intended, set `credential.protectProtocol=false`
+	EOF
+	test_cmp expect stderr &&
+	GIT_ASKPASS=true \
+	git -c credential.protectProtocol=false credential fill <<-\EOF
+	url=https://example%0d.com/
+	EOF
+'
+
 test_expect_success 'host-less URLs are parsed as empty host' '
 	check fill "verbatim foo bar" <<-\EOF
 	url=cert:///path/to/cert.pem
@@ -995,4 +1028,20 @@ test_expect_success 'credential config with partial URLs' '
 	test_grep "skipping credential lookup for key" stderr
 '
 
+BEL="$(printf '\007')"
+
+test_expect_success 'interactive prompt is sanitized' '
+	check fill cntrl-in-username <<-EOF
+	protocol=https
+	host=example.org
+	--
+	protocol=https
+	host=example.org
+	username=${BEL}latrix Lestrange
+	password=askpass-password
+	--
+	askpass: Password for ${SQ}https://%07latrix%[email protected]${SQ}:
+	EOF
+'
+
 test_done

t/t5541-http-push-smart.sh

@@ -344,7 +344,7 @@ test_expect_success 'push over smart http with auth' '
 	git push "$HTTPD_URL"/auth/smart/test_repo.git &&
 	git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
 		log -1 --format=%s >actual &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	test_cmp expect actual
 '
 
@@ -356,7 +356,7 @@ test_expect_success 'push to auth-only-for-push repo' '
 	git push "$HTTPD_URL"/auth-push/smart/test_repo.git &&
 	git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/test_repo.git" \
 		log -1 --format=%s >actual &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	test_cmp expect actual
 '
 
@@ -386,7 +386,7 @@ test_expect_success 'push into half-auth-complete requires password' '
 	git push "$HTTPD_URL/half-auth-complete/smart/half-auth.git" &&
 	git --git-dir="$HTTPD_DOCUMENT_ROOT_PATH/half-auth.git" \
 		log -1 --format=%s >actual &&
-	expect_askpass both user@host &&
+	expect_askpass both user%40host &&
 	test_cmp expect actual
 '
 

t/t5550-http-fetch-dumb.sh

@@ -112,13 +112,13 @@ test_expect_success 'http auth can use user/pass in URL' '
 test_expect_success 'http auth can use just user in URL' '
 	set_askpass wrong pass@host &&
 	git clone "$HTTPD_URL_USER/auth/dumb/repo.git" clone-auth-pass &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'http auth can request both user and pass' '
 	set_askpass user@host pass@host &&
 	git clone "$HTTPD_URL/auth/dumb/repo.git" clone-auth-both &&
-	expect_askpass both user@host
+	expect_askpass both user%40host
 '
 
 test_expect_success 'http auth respects credential helper config' '
@@ -136,14 +136,14 @@ test_expect_success 'http auth can get username from config' '
 	test_config_global "credential.$HTTPD_URL.username" user@host &&
 	set_askpass wrong pass@host &&
 	git clone "$HTTPD_URL/auth/dumb/repo.git" clone-auth-user &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'configured username does not override URL' '
 	test_config_global "credential.$HTTPD_URL.username" wrong &&
 	set_askpass wrong pass@host &&
 	git clone "$HTTPD_URL_USER/auth/dumb/repo.git" clone-auth-user2 &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'set up repo with http submodules' '
@@ -164,7 +164,7 @@ test_expect_success 'cmdline credential config passes to submodule via clone' '
 	set_askpass wrong pass@host &&
 	git -c "credential.$HTTPD_URL.username=user@host" \
 		clone --recursive super super-clone &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'cmdline credential config passes submodule via fetch' '
@@ -175,7 +175,7 @@ test_expect_success 'cmdline credential config passes submodule via fetch' '
 	git -C super-clone \
 	    -c "credential.$HTTPD_URL.username=user@host" \
 	    fetch --recurse-submodules &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'cmdline credential config passes submodule update' '
@@ -192,7 +192,7 @@ test_expect_success 'cmdline credential config passes submodule update' '
 	git -C super-clone \
 	    -c "credential.$HTTPD_URL.username=user@host" \
 	    submodule update &&
-	expect_askpass pass user@host
+	expect_askpass pass user%40host
 '
 
 test_expect_success 'fetch changes via http' '