From 63532648e032f6d600d2eefd2a980c8b7913e9f5 Mon Sep 17 00:00:00 2001 From: Ubuntu Developers Date: Wed, 22 Jun 2022 11:54:58 +0800 Subject: [PATCH] CVE-2020-11008-2 Backport of: Backport of: From 73aafe9bc27585554181c58871a25e6d0f58a3dc Mon Sep 17 00:00:00 2001 From: Jeff King Date: Sat, 18 Apr 2020 20:47:30 -0700 Subject: [PATCH 2/9] t0300: use more realistic inputs Many of the tests in t0300 give partial inputs to git-credential, omitting a protocol or hostname. We're checking only high-level things like whether and how helpers are invoked at all, and we don't care about specific hosts. However, in preparation for tightening up the rules about when we're willing to run a helper, let's start using input that's a bit more realistic: pretend as if http://example.com is being examined. This shouldn't change the point of any of the tests, but do note we have to adjust the expected output to accommodate this (filling a credential will repeat back the protocol/host fields to stdout, and the helper debug messages and askpass prompt will change on stderr). Signed-off-by: Jeff King Reviewed-by: Taylor Blau Signed-off-by: Jonathan Nieder Gbp-Pq: Name CVE-2020-11008-2.patch --- t/t0300-credentials.sh | 89 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 85 insertions(+), 4 deletions(-) diff --git a/t/t0300-credentials.sh b/t/t0300-credentials.sh index a1d4d59..fb63ab8 100755 --- a/t/t0300-credentials.sh +++ b/t/t0300-credentials.sh @@ -40,43 +40,71 @@ test_expect_success 'setup helper scripts' ' test_expect_success 'credential_fill invokes helper' ' check fill "verbatim foo bar" <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=foo password=bar -- verbatim: get + verbatim: protocol=http + verbatim: host=example.com EOF ' test_expect_success 'credential_fill invokes multiple helpers' ' check fill useless "verbatim foo bar" <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=foo password=bar -- useless: get + useless: protocol=http + useless: host=example.com verbatim: get + verbatim: protocol=http + verbatim: host=example.com EOF ' test_expect_success 'credential_fill stops when we get a full response' ' check fill "verbatim one two" "verbatim three four" <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=one password=two -- verbatim: get + verbatim: protocol=http + verbatim: host=example.com EOF ' test_expect_success 'credential_fill continues through partial response' ' check fill "verbatim one \"\"" "verbatim two three" <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=two password=three -- verbatim: get + verbatim: protocol=http + verbatim: host=example.com verbatim: get + verbatim: protocol=http + verbatim: host=example.com verbatim: username=one EOF ' @@ -102,14 +130,20 @@ test_expect_success 'credential_fill passes along metadata' ' test_expect_success 'credential_approve calls all helpers' ' check approve useless "verbatim one two" <<-\EOF + protocol=http + host=example.com username=foo password=bar -- -- useless: store + useless: protocol=http + useless: host=example.com useless: username=foo useless: password=bar verbatim: store + verbatim: protocol=http + verbatim: host=example.com verbatim: username=foo verbatim: password=bar EOF @@ -117,6 +151,8 @@ test_expect_success 'credential_approve calls all helpers' ' test_expect_success 'do not bother storing password-less credential' ' check approve useless <<-\EOF + protocol=http + host=example.com username=foo -- -- @@ -126,14 +162,20 @@ test_expect_success 'do not bother storing password-less credential' ' test_expect_success 'credential_reject calls all helpers' ' check reject useless "verbatim one two" <<-\EOF + protocol=http + host=example.com username=foo password=bar -- -- useless: erase + useless: protocol=http + useless: host=example.com useless: username=foo useless: password=bar verbatim: erase + verbatim: protocol=http + verbatim: host=example.com verbatim: username=foo verbatim: password=bar EOF @@ -141,33 +183,49 @@ test_expect_success 'credential_reject calls all helpers' ' test_expect_success 'usernames can be preserved' ' check fill "verbatim \"\" three" <<-\EOF + protocol=http + host=example.com username=one -- + protocol=http + host=example.com username=one password=three -- verbatim: get + verbatim: protocol=http + verbatim: host=example.com verbatim: username=one EOF ' test_expect_success 'usernames can be overridden' ' check fill "verbatim two three" <<-\EOF + protocol=http + host=example.com username=one -- + protocol=http + host=example.com username=two password=three -- verbatim: get + verbatim: protocol=http + verbatim: host=example.com verbatim: username=one EOF ' test_expect_success 'do not bother completing already-full credential' ' check fill "verbatim three four" <<-\EOF + protocol=http + host=example.com username=one password=two -- + protocol=http + host=example.com username=one password=two -- @@ -179,23 +237,31 @@ test_expect_success 'do not bother completing already-full credential' ' # askpass helper is run, we know the internal getpass is working. test_expect_success 'empty helper list falls back to internal getpass' ' check fill <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=askpass-username password=askpass-password -- - askpass: Username: - askpass: Password: + askpass: Username for '\''http://example.com'\'': + askpass: Password for '\''http://askpass-username@example.com'\'': EOF ' test_expect_success 'internal getpass does not ask for known username' ' check fill <<-\EOF + protocol=http + host=example.com username=foo -- + protocol=http + host=example.com username=foo password=askpass-password -- - askpass: Password: + askpass: Password for '\''http://foo@example.com'\'': EOF ' @@ -207,7 +273,11 @@ HELPER="!f() { test_expect_success 'respect configured credentials' ' test_config credential.helper "$HELPER" && check fill <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=foo password=bar -- @@ -298,10 +368,15 @@ test_expect_success 'helpers can abort the process' ' test_must_fail git \ -c credential.helper=quit \ -c credential.helper="verbatim foo bar" \ - credential fill >stdout 2>stderr && + credential fill >stdout 2>stderr <<-\EOF && + protocol=http + host=example.com + EOF test_must_be_empty stdout && cat >expect <<-\EOF && quit: get + quit: protocol=http + quit: host=example.com fatal: credential helper '\''quit'\'' told us to quit EOF test_i18ncmp expect stderr @@ -310,11 +385,17 @@ test_expect_success 'helpers can abort the process' ' test_expect_success 'empty helper spec resets helper list' ' test_config credential.helper "verbatim file file" && check fill "" "verbatim cmdline cmdline" <<-\EOF + protocol=http + host=example.com -- + protocol=http + host=example.com username=cmdline password=cmdline -- verbatim: get + verbatim: protocol=http + verbatim: host=example.com EOF '