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[release-branch.go1.3] crypto/tls: ensure that we don't resume when tickets are disabled
A security bug affects programs that use crypto/tls to implement a TLS server from Go 1.1 onwards. If the server enables TLS client authentication using certificates (this is rare) and explicitly sets SessionTicketsDisabled to true in the tls.Config, then a malicious client can falsely assert ownership of any client certificate it wishes. This issue was discovered internally and there is no evidence of exploitation. Change authored by Adam Langley <agl@golang.org> https://golang.org/cl/148080043/
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‎src/pkg/crypto/tls/handshake_server.go‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -214,6 +214,10 @@ Curves:
214214
func (hs *serverHandshakeState) checkForResumption() bool {
215215
c := hs.c
216216

217+
if c.config.SessionTicketsDisabled {
218+
return false
219+
}
220+
217221
var ok bool
218222
if hs.sessionState, ok = c.decryptTicket(hs.clientHello.sessionTicket); !ok {
219223
return false

‎src/pkg/crypto/tls/handshake_server_test.go‎

Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -557,6 +557,32 @@ func TestResumption(t *testing.T) {
557557
runServerTestTLS12(t, test)
558558
}
559559

560+
func TestResumptionDisabled(t *testing.T) {
561+
sessionFilePath := tempFile("")
562+
defer os.Remove(sessionFilePath)
563+
564+
config := *testConfig
565+
566+
test := &serverTest{
567+
name: "IssueTicketPreDisable",
568+
command: []string{"openssl", "s_client", "-cipher", "RC4-SHA", "-sess_out", sessionFilePath},
569+
config: &config,
570+
}
571+
runServerTestTLS12(t, test)
572+
573+
config.SessionTicketsDisabled = true
574+
575+
test = &serverTest{
576+
name: "ResumeDisabled",
577+
command: []string{"openssl", "s_client", "-cipher", "RC4-SHA", "-sess_in", sessionFilePath},
578+
config: &config,
579+
}
580+
runServerTestTLS12(t, test)
581+
582+
// One needs to manually confirm that the handshake in the golden data
583+
// file for ResumeDisabled does not include a resumption handshake.
584+
}
585+
560586
// cert.pem and key.pem were generated with generate_cert.go
561587
// Thus, they have no ExtKeyUsage fields and trigger an error
562588
// when verification is turned on.

‎src/pkg/crypto/tls/testdata/Server-TLSv12-IssueTicketPreDisable‎

Lines changed: 87 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
1+
>>> Flow 1 (client to server)
2+
00000000 16 03 01 00 60 01 00 00 5c 03 03 54 23 54 02 17 |....`...\..T#T..|
3+
00000010 f3 53 13 3d 48 88 c3 19 b9 d1 3d 33 7f f5 99 56 |.S.=H.....=3...V|
4+
00000020 04 71 1b d9 d5 64 8a 0d 4a 54 00 00 00 04 00 05 |.q...d..JT......|
5+
00000030 00 ff 01 00 00 2f 00 23 00 00 00 0d 00 22 00 20 |...../.#.....". |
6+
00000040 06 01 06 02 06 03 05 01 05 02 05 03 04 01 04 02 |................|
7+
00000050 04 03 03 01 03 02 03 03 02 01 02 02 02 03 01 01 |................|
8+
00000060 00 0f 00 01 01 |.....|
9+
>>> Flow 2 (server to client)
10+
00000000 16 03 03 00 35 02 00 00 31 03 03 00 00 00 00 00 |....5...1.......|
11+
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
12+
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 05 00 00 |................|
13+
00000030 09 00 23 00 00 ff 01 00 01 00 16 03 03 02 be 0b |..#.............|
14+
00000040 00 02 ba 00 02 b7 00 02 b4 30 82 02 b0 30 82 02 |.........0...0..|
15+
00000050 19 a0 03 02 01 02 02 09 00 85 b0 bb a4 8a 7f b8 |................|
16+
00000060 ca 30 0d 06 09 2a 86 48 86 f7 0d 01 01 05 05 00 |.0...*.H........|
17+
00000070 30 45 31 0b 30 09 06 03 55 04 06 13 02 41 55 31 |0E1.0...U....AU1|
18+
00000080 13 30 11 06 03 55 04 08 13 0a 53 6f 6d 65 2d 53 |.0...U....Some-S|
19+
00000090 74 61 74 65 31 21 30 1f 06 03 55 04 0a 13 18 49 |tate1!0...U....I|
20+
000000a0 6e 74 65 72 6e 65 74 20 57 69 64 67 69 74 73 20 |nternet Widgits |
21+
000000b0 50 74 79 20 4c 74 64 30 1e 17 0d 31 30 30 34 32 |Pty Ltd0...10042|
22+
000000c0 34 30 39 30 39 33 38 5a 17 0d 31 31 30 34 32 34 |4090938Z..110424|
23+
000000d0 30 39 30 39 33 38 5a 30 45 31 0b 30 09 06 03 55 |090938Z0E1.0...U|
24+
000000e0 04 06 13 02 41 55 31 13 30 11 06 03 55 04 08 13 |....AU1.0...U...|
25+
000000f0 0a 53 6f 6d 65 2d 53 74 61 74 65 31 21 30 1f 06 |.Some-State1!0..|
26+
00000100 03 55 04 0a 13 18 49 6e 74 65 72 6e 65 74 20 57 |.U....Internet W|
27+
00000110 69 64 67 69 74 73 20 50 74 79 20 4c 74 64 30 81 |idgits Pty Ltd0.|
28+
00000120 9f 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 |.0...*.H........|
29+
00000130 03 81 8d 00 30 81 89 02 81 81 00 bb 79 d6 f5 17 |....0.......y...|
30+
00000140 b5 e5 bf 46 10 d0 dc 69 be e6 2b 07 43 5a d0 03 |...F...i..+.CZ..|
31+
00000150 2d 8a 7a 43 85 b7 14 52 e7 a5 65 4c 2c 78 b8 23 |-.zC...R..eL,x.#|
32+
00000160 8c b5 b4 82 e5 de 1f 95 3b 7e 62 a5 2c a5 33 d6 |........;~b.,.3.|
33+
00000170 fe 12 5c 7a 56 fc f5 06 bf fa 58 7b 26 3f b5 cd |..\zV.....X{&?..|
34+
00000180 04 d3 d0 c9 21 96 4a c7 f4 54 9f 5a bf ef 42 71 |....!.J..T.Z..Bq|
35+
00000190 00 fe 18 99 07 7f 7e 88 7d 7d f1 04 39 c4 a2 2e |......~.}}..9...|
36+
000001a0 db 51 c9 7c e3 c0 4c 3b 32 66 01 cf af b1 1d b8 |.Q.|..L;2f......|
37+
000001b0 71 9a 1d db db 89 6b ae da 2d 79 02 03 01 00 01 |q.....k..-y.....|
38+
000001c0 a3 81 a7 30 81 a4 30 1d 06 03 55 1d 0e 04 16 04 |...0..0...U.....|
39+
000001d0 14 b1 ad e2 85 5a cf cb 28 db 69 ce 23 69 de d3 |.....Z..(.i.#i..|
40+
000001e0 26 8e 18 88 39 30 75 06 03 55 1d 23 04 6e 30 6c |&...90u..U.#.n0l|
41+
000001f0 80 14 b1 ad e2 85 5a cf cb 28 db 69 ce 23 69 de |......Z..(.i.#i.|
42+
00000200 d3 26 8e 18 88 39 a1 49 a4 47 30 45 31 0b 30 09 |.&...9.I.G0E1.0.|
43+
00000210 06 03 55 04 06 13 02 41 55 31 13 30 11 06 03 55 |..U....AU1.0...U|
44+
00000220 04 08 13 0a 53 6f 6d 65 2d 53 74 61 74 65 31 21 |....Some-State1!|
45+
00000230 30 1f 06 03 55 04 0a 13 18 49 6e 74 65 72 6e 65 |0...U....Interne|
46+
00000240 74 20 57 69 64 67 69 74 73 20 50 74 79 20 4c 74 |t Widgits Pty Lt|
47+
00000250 64 82 09 00 85 b0 bb a4 8a 7f b8 ca 30 0c 06 03 |d...........0...|
48+
00000260 55 1d 13 04 05 30 03 01 01 ff 30 0d 06 09 2a 86 |U....0....0...*.|
49+
00000270 48 86 f7 0d 01 01 05 05 00 03 81 81 00 08 6c 45 |H.............lE|
50+
00000280 24 c7 6b b1 59 ab 0c 52 cc f2 b0 14 d7 87 9d 7a |$.k.Y..R.......z|
51+
00000290 64 75 b5 5a 95 66 e4 c5 2b 8e ae 12 66 1f eb 4f |du.Z.f..+...f..O|
52+
000002a0 38 b3 6e 60 d3 92 fd f7 41 08 b5 25 13 b1 18 7a |8.n`....A..%...z|
53+
000002b0 24 fb 30 1d ba ed 98 b9 17 ec e7 d7 31 59 db 95 |$.0.........1Y..|
54+
000002c0 d3 1d 78 ea 50 56 5c d5 82 5a 2d 5a 5f 33 c4 b6 |..x.PV\..Z-Z_3..|
55+
000002d0 d8 c9 75 90 96 8c 0f 52 98 b5 cd 98 1f 89 20 5f |..u....R...... _|
56+
000002e0 f2 a0 1c a3 1b 96 94 dd a9 fd 57 e9 70 e8 26 6d |..........W.p.&m|
57+
000002f0 71 99 9b 26 6e 38 50 29 6c 90 a7 bd d9 16 03 03 |q..&n8P)l.......|
58+
00000300 00 04 0e 00 00 00 |......|
59+
>>> Flow 3 (client to server)
60+
00000000 16 03 03 00 86 10 00 00 82 00 80 27 e9 a4 f7 e7 |...........'....|
61+
00000010 df 25 de 84 8c 1f d6 e6 c3 11 28 55 9a c1 91 37 |.%........(U...7|
62+
00000020 84 f5 ba f8 80 0d ca 50 cb 1e 72 f7 97 6f c2 b2 |.......P..r..o..|
63+
00000030 04 4d 13 7c e0 6e a0 1f 91 e1 38 1b a2 c0 55 16 |.M.|.n....8...U.|
64+
00000040 7f 29 fc ed 1c 1a cf 72 14 c3 00 c1 dd 36 36 af |.).....r.....66.|
65+
00000050 a6 e4 a8 be ba ec 13 d0 1e d0 1d fd e1 5b 27 fd |.............['.|
66+
00000060 9a da 2e 12 c8 b0 b9 c2 b9 76 ec 7f 3c 98 b6 63 |.........v..<..c|
67+
00000070 bc da f0 07 7a 3d e7 61 f4 2f 12 80 3b f9 3b cc |....z=.a./..;.;.|
68+
00000080 05 c8 2f 7e 28 b2 73 bf 97 61 29 14 03 03 00 01 |../~(.s..a).....|
69+
00000090 01 16 03 03 00 24 17 59 a9 45 53 46 33 96 50 dd |.....$.Y.ESF3.P.|
70+
000000a0 3e 23 aa 91 38 f8 56 4a 2f 1a f2 b1 44 9b ce 17 |>#..8.VJ/...D...|
71+
000000b0 6b 8a 89 76 bc 67 b8 8b ba 90 |k..v.g....|
72+
>>> Flow 4 (server to client)
73+
00000000 16 03 03 00 72 04 00 00 6e 00 00 00 00 00 68 00 |....r...n.....h.|
74+
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 65 |...............e|
75+
00000020 ea 4b d1 ef ba 2d db 0c ba 9a d4 20 76 57 c8 ec |.K...-..... vW..|
76+
00000030 dc 2d 77 fb fb 3b 93 5f 53 e0 14 4f 90 fb d6 55 |.-w..;._S..O...U|
77+
00000040 57 8c 8d 0d 25 ea 5d 0d f2 91 e5 12 22 12 ec 7b |W...%.]....."..{|
78+
00000050 5f b6 6e fd 07 59 23 24 fc b1 97 ca ea 56 a5 c2 |_.n..Y#$.....V..|
79+
00000060 a0 e4 9e 99 64 f2 64 d0 75 7a 46 63 e3 dc 21 ed |....d.d.uzFc..!.|
80+
00000070 78 56 e9 e1 ab 66 80 14 03 03 00 01 01 16 03 03 |xV...f..........|
81+
00000080 00 24 fc 14 68 07 17 1f df b7 84 cb fd c1 e0 e4 |.$..h...........|
82+
00000090 f2 1a ea 34 b5 00 7f 70 be c8 1c 0a d6 55 e3 57 |...4...p.....U.W|
83+
000000a0 50 4e 6d 7d 8a 5d 17 03 03 00 21 24 27 50 40 c1 |PNm}.]....!$'P@.|
84+
000000b0 c5 bd c7 9f 95 d9 ba 2e 7b 0e db ea a7 31 81 05 |........{....1..|
85+
000000c0 75 43 b1 63 cf b8 55 92 ef 76 98 a9 15 03 03 00 |uC.c..U..v......|
86+
000000d0 16 d7 ea 3c 79 e7 a6 2f 61 39 ec 4e 95 86 48 5e |...<y../a9.N..H^|
87+
000000e0 75 a0 9e 41 42 89 67 |u..AB.g|

‎src/pkg/crypto/tls/testdata/Server-TLSv12-ResumeDisabled‎

Lines changed: 87 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,87 @@
1+
>>> Flow 1 (client to server)
2+
00000000 16 03 01 00 e8 01 00 00 e4 03 03 54 23 54 02 a5 |...........T#T..|
3+
00000010 10 11 0f 6d e5 2d 2f e8 bb 52 b1 38 3f 65 01 43 |...m.-/..R.8?e.C|
4+
00000020 36 cc 48 f6 09 22 a1 85 20 28 3c 20 35 8b fe 7a |6.H..".. (< 5..z|
5+
00000030 41 3b 59 3a 5d b9 b3 21 f0 62 e9 0d 7b af f5 5d |A;Y:]..!.b..{..]|
6+
00000040 fa 65 1a 40 c8 ca cd 74 8c ef d2 fb 00 04 00 05 |.e.@...t........|
7+
00000050 00 ff 01 00 00 97 00 23 00 68 00 00 00 00 00 00 |.......#.h......|
8+
00000060 00 00 00 00 00 00 00 00 00 00 65 ea 4b d1 ef ba |..........e.K...|
9+
00000070 2d db 0c ba 9a d4 20 76 57 c8 ec dc 2d 77 fb fb |-..... vW...-w..|
10+
00000080 3b 93 5f 53 e0 14 4f 90 fb d6 55 57 8c 8d 0d 25 |;._S..O...UW...%|
11+
00000090 ea 5d 0d f2 91 e5 12 22 12 ec 7b 5f b6 6e fd 07 |.]....."..{_.n..|
12+
000000a0 59 23 24 fc b1 97 ca ea 56 a5 c2 a0 e4 9e 99 64 |Y#$.....V......d|
13+
000000b0 f2 64 d0 75 7a 46 63 e3 dc 21 ed 78 56 e9 e1 ab |.d.uzFc..!.xV...|
14+
000000c0 66 80 00 0d 00 22 00 20 06 01 06 02 06 03 05 01 |f....". ........|
15+
000000d0 05 02 05 03 04 01 04 02 04 03 03 01 03 02 03 03 |................|
16+
000000e0 02 01 02 02 02 03 01 01 00 0f 00 01 01 |.............|
17+
>>> Flow 2 (server to client)
18+
00000000 16 03 03 00 31 02 00 00 2d 03 03 00 00 00 00 00 |....1...-.......|
19+
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
20+
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 05 00 00 |................|
21+
00000030 05 ff 01 00 01 00 16 03 03 02 be 0b 00 02 ba 00 |................|
22+
00000040 02 b7 00 02 b4 30 82 02 b0 30 82 02 19 a0 03 02 |.....0...0......|
23+
00000050 01 02 02 09 00 85 b0 bb a4 8a 7f b8 ca 30 0d 06 |.............0..|
24+
00000060 09 2a 86 48 86 f7 0d 01 01 05 05 00 30 45 31 0b |.*.H........0E1.|
25+
00000070 30 09 06 03 55 04 06 13 02 41 55 31 13 30 11 06 |0...U....AU1.0..|
26+
00000080 03 55 04 08 13 0a 53 6f 6d 65 2d 53 74 61 74 65 |.U....Some-State|
27+
00000090 31 21 30 1f 06 03 55 04 0a 13 18 49 6e 74 65 72 |1!0...U....Inter|
28+
000000a0 6e 65 74 20 57 69 64 67 69 74 73 20 50 74 79 20 |net Widgits Pty |
29+
000000b0 4c 74 64 30 1e 17 0d 31 30 30 34 32 34 30 39 30 |Ltd0...100424090|
30+
000000c0 39 33 38 5a 17 0d 31 31 30 34 32 34 30 39 30 39 |938Z..1104240909|
31+
000000d0 33 38 5a 30 45 31 0b 30 09 06 03 55 04 06 13 02 |38Z0E1.0...U....|
32+
000000e0 41 55 31 13 30 11 06 03 55 04 08 13 0a 53 6f 6d |AU1.0...U....Som|
33+
000000f0 65 2d 53 74 61 74 65 31 21 30 1f 06 03 55 04 0a |e-State1!0...U..|
34+
00000100 13 18 49 6e 74 65 72 6e 65 74 20 57 69 64 67 69 |..Internet Widgi|
35+
00000110 74 73 20 50 74 79 20 4c 74 64 30 81 9f 30 0d 06 |ts Pty Ltd0..0..|
36+
00000120 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 |.*.H............|
37+
00000130 30 81 89 02 81 81 00 bb 79 d6 f5 17 b5 e5 bf 46 |0.......y......F|
38+
00000140 10 d0 dc 69 be e6 2b 07 43 5a d0 03 2d 8a 7a 43 |...i..+.CZ..-.zC|
39+
00000150 85 b7 14 52 e7 a5 65 4c 2c 78 b8 23 8c b5 b4 82 |...R..eL,x.#....|
40+
00000160 e5 de 1f 95 3b 7e 62 a5 2c a5 33 d6 fe 12 5c 7a |....;~b.,.3...\z|
41+
00000170 56 fc f5 06 bf fa 58 7b 26 3f b5 cd 04 d3 d0 c9 |V.....X{&?......|
42+
00000180 21 96 4a c7 f4 54 9f 5a bf ef 42 71 00 fe 18 99 |!.J..T.Z..Bq....|
43+
00000190 07 7f 7e 88 7d 7d f1 04 39 c4 a2 2e db 51 c9 7c |..~.}}..9....Q.||
44+
000001a0 e3 c0 4c 3b 32 66 01 cf af b1 1d b8 71 9a 1d db |..L;2f......q...|
45+
000001b0 db 89 6b ae da 2d 79 02 03 01 00 01 a3 81 a7 30 |..k..-y........0|
46+
000001c0 81 a4 30 1d 06 03 55 1d 0e 04 16 04 14 b1 ad e2 |..0...U.........|
47+
000001d0 85 5a cf cb 28 db 69 ce 23 69 de d3 26 8e 18 88 |.Z..(.i.#i..&...|
48+
000001e0 39 30 75 06 03 55 1d 23 04 6e 30 6c 80 14 b1 ad |90u..U.#.n0l....|
49+
000001f0 e2 85 5a cf cb 28 db 69 ce 23 69 de d3 26 8e 18 |..Z..(.i.#i..&..|
50+
00000200 88 39 a1 49 a4 47 30 45 31 0b 30 09 06 03 55 04 |.9.I.G0E1.0...U.|
51+
00000210 06 13 02 41 55 31 13 30 11 06 03 55 04 08 13 0a |...AU1.0...U....|
52+
00000220 53 6f 6d 65 2d 53 74 61 74 65 31 21 30 1f 06 03 |Some-State1!0...|
53+
00000230 55 04 0a 13 18 49 6e 74 65 72 6e 65 74 20 57 69 |U....Internet Wi|
54+
00000240 64 67 69 74 73 20 50 74 79 20 4c 74 64 82 09 00 |dgits Pty Ltd...|
55+
00000250 85 b0 bb a4 8a 7f b8 ca 30 0c 06 03 55 1d 13 04 |........0...U...|
56+
00000260 05 30 03 01 01 ff 30 0d 06 09 2a 86 48 86 f7 0d |.0....0...*.H...|
57+
00000270 01 01 05 05 00 03 81 81 00 08 6c 45 24 c7 6b b1 |..........lE$.k.|
58+
00000280 59 ab 0c 52 cc f2 b0 14 d7 87 9d 7a 64 75 b5 5a |Y..R.......zdu.Z|
59+
00000290 95 66 e4 c5 2b 8e ae 12 66 1f eb 4f 38 b3 6e 60 |.f..+...f..O8.n`|
60+
000002a0 d3 92 fd f7 41 08 b5 25 13 b1 18 7a 24 fb 30 1d |....A..%...z$.0.|
61+
000002b0 ba ed 98 b9 17 ec e7 d7 31 59 db 95 d3 1d 78 ea |........1Y....x.|
62+
000002c0 50 56 5c d5 82 5a 2d 5a 5f 33 c4 b6 d8 c9 75 90 |PV\..Z-Z_3....u.|
63+
000002d0 96 8c 0f 52 98 b5 cd 98 1f 89 20 5f f2 a0 1c a3 |...R...... _....|
64+
000002e0 1b 96 94 dd a9 fd 57 e9 70 e8 26 6d 71 99 9b 26 |......W.p.&mq..&|
65+
000002f0 6e 38 50 29 6c 90 a7 bd d9 16 03 03 00 04 0e 00 |n8P)l...........|
66+
00000300 00 00 |..|
67+
>>> Flow 3 (client to server)
68+
00000000 16 03 03 00 86 10 00 00 82 00 80 ae 02 dd 1f 1a |................|
69+
00000010 86 83 f5 2f 82 46 4b 29 58 aa a1 b3 56 8b 4e 40 |.../.FK)X...V.N@|
70+
00000020 ef 23 65 67 ad 48 e5 e1 fd ae dd bf 68 fd bd a6 |.#eg.H......h...|
71+
00000030 13 a0 7e 05 ab f7 20 e1 6a 4e d1 37 93 08 1d c9 |..~... .jN.7....|
72+
00000040 37 e0 b5 34 28 bf 20 45 45 da 0f 7e 51 a7 c6 ae |7..4(. EE..~Q...|
73+
00000050 61 6c 07 1b 73 ef da 6e 25 c4 ed be e3 3f da ae |al..s..n%....?..|
74+
00000060 cd 3c 17 9c 2e ee fb 47 9d b3 a1 b2 c3 5d e0 83 |.<.....G.....]..|
75+
00000070 74 20 37 2d 72 d6 d0 4d 58 0e 26 1c 50 22 95 08 |t 7-r..MX.&.P"..|
76+
00000080 7d e0 5f 86 99 9e 2c 2e a7 a0 7f 14 03 03 00 01 |}._...,.........|
77+
00000090 01 16 03 03 00 24 a2 ab 41 25 a5 cf 04 18 1d 98 |.....$..A%......|
78+
000000a0 88 6c 59 21 86 33 54 f4 35 b4 21 6e a5 29 d5 6e |.lY!.3T.5.!n.).n|
79+
000000b0 3d 08 72 b0 af 46 b5 8f 6b 86 |=.r..F..k.|
80+
>>> Flow 4 (server to client)
81+
00000000 14 03 03 00 01 01 16 03 03 00 24 59 20 4d c2 17 |..........$Y M..|
82+
00000010 8b 3c 9b 33 d9 f9 ef fb 80 18 1f 67 a7 58 12 89 |.<.3.......g.X..|
83+
00000020 4e 73 0f 2d 7b e6 c4 a6 79 73 01 da 22 e8 54 17 |Ns.-{...ys..".T.|
84+
00000030 03 03 00 21 36 ca 64 0f 4a 12 a5 50 3d 97 bb 39 |...!6.d.J..P=..9|
85+
00000040 02 fc ed d1 82 6a 9a 2e 21 79 f6 e1 b3 cc 32 db |.....j..!y....2.|
86+
00000050 0f 5d b3 fb a5 15 03 03 00 16 51 f4 be 57 7a df |.]........Q..Wz.|
87+
00000060 f1 f2 bd b5 51 5e 45 80 be 0b 9a 0c d1 19 3c 79 |....Q^E.......<y|

‎src/pkg/crypto/tls/ticket.go‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -153,7 +153,8 @@ func (c *Conn) encryptTicket(state *sessionState) ([]byte, error) {
153153
}
154154

155155
func (c *Conn) decryptTicket(encrypted []byte) (*sessionState, bool) {
156-
if len(encrypted) < aes.BlockSize+sha256.Size {
156+
if c.config.SessionTicketsDisabled ||
157+
len(encrypted) < aes.BlockSize+sha256.Size {
157158
return nil, false
158159
}
159160

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