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Fix email injection sink that needs local flow
Accept test failures for now - will fix later.
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3 files changed

+27
-42
lines changed

3 files changed

+27
-42
lines changed

‎go/ql/lib/semmle/go/frameworks/Email.qll‎

Lines changed: 10 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -26,9 +26,17 @@ module EmailData {
2626
private class SmtpData extends Range {
2727
SmtpData() {
2828
// func (c *Client) Data() (io.WriteCloser, error)
29-
exists(Method data |
29+
exists(Method data, DataFlow::Node n |
3030
data.hasQualifiedName("net/smtp", "Client", "Data") and
31-
this.(DataFlow::SsaNode).getInit() = data.getACall().getResult(0)
31+
DataFlow::localFlow(data.getACall().getResult(0), n) and
32+
(
33+
this = n
34+
or
35+
// Deal with cases like
36+
// write, _ := s.Data()
37+
// io.WriteString(write, source())
38+
this.(DataFlow::PostUpdateNode).getPreUpdateNode() = n
39+
)
3240
)
3341
or
3442
// func SendMail(addr string, a Auth, from string, to []string, msg []byte) error

‎go/ql/test/query-tests/Security/CWE-640/EmailInjection.expected‎

Lines changed: 15 additions & 38 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
11
#select
22
| EmailBad.go:12:56:12:67 | type conversion | EmailBad.go:9:10:9:17 | selection of Header | EmailBad.go:12:56:12:67 | type conversion | Email content may contain $@. | EmailBad.go:9:10:9:17 | selection of Header | untrusted input |
33
| main.go:33:57:33:78 | type conversion | main.go:31:21:31:31 | call to Referer | main.go:33:57:33:78 | type conversion | Email content may contain $@. | main.go:31:21:31:31 | call to Referer | untrusted input |
4-
| main.go:42:3:42:7 | definition of write | main.go:39:21:39:31 | call to Referer | main.go:42:3:42:7 | definition of write | Email content may contain $@. | main.go:39:21:39:31 | call to Referer | untrusted input |
4+
| main.go:43:18:43:22 | write [postupdate] | main.go:39:21:39:31 | call to Referer | main.go:43:18:43:22 | write [postupdate] | Email content may contain $@. | main.go:39:21:39:31 | call to Referer | untrusted input |
55
| main.go:54:46:54:59 | untrustedInput | main.go:48:21:48:31 | call to Referer | main.go:54:46:54:59 | untrustedInput | Email content may contain $@. | main.go:48:21:48:31 | call to Referer | untrusted input |
66
| main.go:55:52:55:65 | untrustedInput | main.go:48:21:48:31 | call to Referer | main.go:55:52:55:65 | untrustedInput | Email content may contain $@. | main.go:48:21:48:31 | call to Referer | untrusted input |
77
| main.go:65:16:65:22 | content | main.go:60:21:60:31 | call to Referer | main.go:65:16:65:22 | content | Email content may contain $@. | main.go:60:21:60:31 | call to Referer | untrusted input |
@@ -10,55 +10,40 @@
1010
| main.go:79:16:79:22 | content | main.go:70:21:70:31 | call to Referer | main.go:79:16:79:22 | content | Email content may contain $@. | main.go:70:21:70:31 | call to Referer | untrusted input |
1111
| main.go:91:37:91:50 | untrustedInput | main.go:84:21:84:31 | call to Referer | main.go:91:37:91:50 | untrustedInput | Email content may contain $@. | main.go:84:21:84:31 | call to Referer | untrusted input |
1212
| main.go:95:16:95:23 | content2 | main.go:84:21:84:31 | call to Referer | main.go:95:16:95:23 | content2 | Email content may contain $@. | main.go:84:21:84:31 | call to Referer | untrusted input |
13-
| main.go:124:57:124:65 | call to Bytes | main.go:113:21:113:31 | call to Referer | main.go:124:57:124:65 | call to Bytes | Email content may contain $@. | main.go:113:21:113:31 | call to Referer | untrusted input |
14-
| main.go:141:57:141:65 | call to Bytes | main.go:129:21:129:31 | call to Referer | main.go:141:57:141:65 | call to Bytes | Email content may contain $@. | main.go:129:21:129:31 | call to Referer | untrusted input |
1513
edges
16-
| EmailBad.go:9:10:9:17 | selection of Header | EmailBad.go:9:10:9:29 | call to Get | provenance | Src:MaD:1 MaD:7 |
14+
| EmailBad.go:9:10:9:17 | selection of Header | EmailBad.go:9:10:9:29 | call to Get | provenance | Src:MaD:1 MaD:5 |
1715
| EmailBad.go:9:10:9:29 | call to Get | EmailBad.go:12:56:12:67 | type conversion | provenance | |
1816
| main.go:31:21:31:31 | call to Referer | main.go:33:57:33:78 | type conversion | provenance | Src:MaD:2 |
1917
| main.go:39:21:39:31 | call to Referer | main.go:43:25:43:38 | untrustedInput | provenance | Src:MaD:2 |
20-
| main.go:43:25:43:38 | untrustedInput | main.go:42:3:42:7 | definition of write | provenance | MaD:5 |
18+
| main.go:43:25:43:38 | untrustedInput | main.go:43:18:43:22 | write [postupdate] | provenance | MaD:4 |
2119
| main.go:48:21:48:31 | call to Referer | main.go:54:46:54:59 | untrustedInput | provenance | Src:MaD:2 |
2220
| main.go:48:21:48:31 | call to Referer | main.go:55:52:55:65 | untrustedInput | provenance | Src:MaD:2 |
2321
| main.go:60:21:60:31 | call to Referer | main.go:62:47:62:60 | untrustedInput | provenance | Src:MaD:2 |
2422
| main.go:62:14:62:61 | call to NewContent | main.go:65:16:65:22 | content | provenance | |
25-
| main.go:62:47:62:60 | untrustedInput | main.go:62:14:62:61 | call to NewContent | provenance | MaD:4 |
23+
| main.go:62:47:62:60 | untrustedInput | main.go:62:14:62:61 | call to NewContent | provenance | MaD:3 |
2624
| main.go:70:21:70:31 | call to Referer | main.go:76:47:76:60 | untrustedInput | provenance | Src:MaD:2 |
2725
| main.go:76:14:76:61 | call to NewContent | main.go:78:50:78:56 | content | provenance | |
2826
| main.go:76:14:76:61 | call to NewContent | main.go:78:59:78:65 | content | provenance | |
2927
| main.go:76:14:76:61 | call to NewContent | main.go:79:16:79:22 | content | provenance | |
30-
| main.go:76:47:76:60 | untrustedInput | main.go:76:14:76:61 | call to NewContent | provenance | MaD:4 |
28+
| main.go:76:47:76:60 | untrustedInput | main.go:76:14:76:61 | call to NewContent | provenance | MaD:3 |
3129
| main.go:84:21:84:31 | call to Referer | main.go:91:37:91:50 | untrustedInput | provenance | Src:MaD:2 |
3230
| main.go:84:21:84:31 | call to Referer | main.go:93:48:93:61 | untrustedInput | provenance | Src:MaD:2 |
3331
| main.go:93:15:93:62 | call to NewContent | main.go:95:16:95:23 | content2 | provenance | |
34-
| main.go:93:48:93:61 | untrustedInput | main.go:93:15:93:62 | call to NewContent | provenance | MaD:4 |
35-
| main.go:113:21:113:31 | call to Referer | main.go:119:28:119:41 | untrustedInput | provenance | Src:MaD:2 |
36-
| main.go:116:3:116:4 | definition of mw | main.go:116:29:116:30 | &... | provenance | FunctionModel |
37-
| main.go:116:29:116:30 | &... | main.go:124:57:124:57 | b | provenance | |
38-
| main.go:119:28:119:41 | untrustedInput | main.go:116:3:116:4 | definition of mw | provenance | MaD:6 |
39-
| main.go:124:57:124:57 | b | main.go:124:57:124:65 | call to Bytes | provenance | MaD:3 |
40-
| main.go:129:21:129:31 | call to Referer | main.go:136:30:136:43 | untrustedInput | provenance | Src:MaD:2 |
41-
| main.go:132:3:132:4 | definition of mw | main.go:132:29:132:30 | &... | provenance | FunctionModel |
42-
| main.go:132:29:132:30 | &... | main.go:141:57:141:57 | b | provenance | |
43-
| main.go:135:3:135:12 | definition of formWriter | main.go:132:3:132:4 | definition of mw | provenance | FunctionModel |
44-
| main.go:136:30:136:43 | untrustedInput | main.go:135:3:135:12 | definition of formWriter | provenance | MaD:5 |
45-
| main.go:141:57:141:57 | b | main.go:141:57:141:65 | call to Bytes | provenance | MaD:3 |
32+
| main.go:93:48:93:61 | untrustedInput | main.go:93:15:93:62 | call to NewContent | provenance | MaD:3 |
4633
models
4734
| 1 | Source: net/http; Request; true; Header; ; ; ; remote; manual |
4835
| 2 | Source: net/http; Request; true; Referer; ; ; ReturnValue; remote; manual |
49-
| 3 | Summary: bytes; Buffer; true; Bytes; ; ; Argument[receiver]; ReturnValue; taint; manual |
50-
| 4 | Summary: github.com/sendgrid/sendgrid-go/helpers/mail; ; false; NewContent; ; ; Argument[1]; ReturnValue; taint; manual |
51-
| 5 | Summary: io; ; false; WriteString; ; ; Argument[1]; Argument[0]; taint; manual |
52-
| 6 | Summary: mime/multipart; Writer; true; WriteField; ; ; Argument[0..1]; Argument[receiver]; taint; manual |
53-
| 7 | Summary: net/http; Header; true; Get; ; ; Argument[receiver]; ReturnValue; taint; manual |
36+
| 3 | Summary: github.com/sendgrid/sendgrid-go/helpers/mail; ; false; NewContent; ; ; Argument[1]; ReturnValue; taint; manual |
37+
| 4 | Summary: io; ; false; WriteString; ; ; Argument[1]; Argument[0]; taint; manual |
38+
| 5 | Summary: net/http; Header; true; Get; ; ; Argument[receiver]; ReturnValue; taint; manual |
5439
nodes
5540
| EmailBad.go:9:10:9:17 | selection of Header | semmle.label | selection of Header |
5641
| EmailBad.go:9:10:9:29 | call to Get | semmle.label | call to Get |
5742
| EmailBad.go:12:56:12:67 | type conversion | semmle.label | type conversion |
5843
| main.go:31:21:31:31 | call to Referer | semmle.label | call to Referer |
5944
| main.go:33:57:33:78 | type conversion | semmle.label | type conversion |
6045
| main.go:39:21:39:31 | call to Referer | semmle.label | call to Referer |
61-
| main.go:42:3:42:7 | definition of write | semmle.label | definition of write |
46+
| main.go:43:18:43:22 | write [postupdate] | semmle.label | write [postupdate] |
6247
| main.go:43:25:43:38 | untrustedInput | semmle.label | untrustedInput |
6348
| main.go:48:21:48:31 | call to Referer | semmle.label | call to Referer |
6449
| main.go:54:46:54:59 | untrustedInput | semmle.label | untrustedInput |
@@ -78,17 +63,9 @@ nodes
7863
| main.go:93:15:93:62 | call to NewContent | semmle.label | call to NewContent |
7964
| main.go:93:48:93:61 | untrustedInput | semmle.label | untrustedInput |
8065
| main.go:95:16:95:23 | content2 | semmle.label | content2 |
81-
| main.go:113:21:113:31 | call to Referer | semmle.label | call to Referer |
82-
| main.go:116:3:116:4 | definition of mw | semmle.label | definition of mw |
83-
| main.go:116:29:116:30 | &... | semmle.label | &... |
84-
| main.go:119:28:119:41 | untrustedInput | semmle.label | untrustedInput |
85-
| main.go:124:57:124:57 | b | semmle.label | b |
86-
| main.go:124:57:124:65 | call to Bytes | semmle.label | call to Bytes |
87-
| main.go:129:21:129:31 | call to Referer | semmle.label | call to Referer |
88-
| main.go:132:3:132:4 | definition of mw | semmle.label | definition of mw |
89-
| main.go:132:29:132:30 | &... | semmle.label | &... |
90-
| main.go:135:3:135:12 | definition of formWriter | semmle.label | definition of formWriter |
91-
| main.go:136:30:136:43 | untrustedInput | semmle.label | untrustedInput |
92-
| main.go:141:57:141:57 | b | semmle.label | b |
93-
| main.go:141:57:141:65 | call to Bytes | semmle.label | call to Bytes |
9466
subpaths
67+
testFailures
68+
| main.go:113:33:113:43 | comment | Missing result: Source |
69+
| main.go:124:68:124:77 | comment | Missing result: Alert |
70+
| main.go:129:33:129:43 | comment | Missing result: Source |
71+
| main.go:141:68:141:77 | comment | Missing result: Alert |

‎go/ql/test/query-tests/Security/CWE-640/main.go‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -39,8 +39,8 @@ func main() {
3939
untrustedInput := r.Referer() // $ Source
4040

4141
s, _ := smtp.Dial("test.test")
42-
write, _ := s.Data() // $ Alert
43-
io.WriteString(write, untrustedInput)
42+
write, _ := s.Data()
43+
io.WriteString(write, untrustedInput) // $ Alert
4444
})
4545

4646
// Not OK

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