基于github testssl工具测试系统TLS/SSL相关漏洞(CVE-2014-3566)

问题背景

1.市场反馈某型号路由器产品进行安全扫描时存在漏洞CVE-2014-3566,直接原因是openssl版本过低。

2.需要在本地测试环境验证该漏洞是否还存在?openssl版本过低是否是直接原因?该openssl版本是否已经包含TLS_FALLBACK_SCSV的支持?

解决思路

1. 查询openssl当前的版本和支持的加解密信息

1
2
openssl version
openssl cipher -v

2. 搜索了下相关资料,发现github有一个开源工具testssl,地址https://github.com/drwetter/testssl.sh ,详细介绍可以直接去看一下。就直接拿来用了

1
2
3
4
git clone https://github.com/drwetter/testssl.sh.git
#路由器lan 地址为192.168.0.1
#针对POODLE SSLv3(CVE-2014-3566)进行测试
./testssl.sh -O 192.168.0.1

3. 测试结果

4. testssl.sh的其他配置项说明

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
userid@somehost:~ % testssl.sh



testssl.sh <options>



     -h, --help                    what you're looking at

     -b, --banner                  displays banner + version of testssl.sh

     -v, --version                 same as previous

     -V, --local                   pretty print all local ciphers

     -V, --local <pattern>         which local ciphers with <pattern> are available?

                                   (if pattern not a number: word match)



testssl.sh <options> URI    ("testssl.sh URI" does everything except -E)



     -e, --each-cipher             checks each local cipher remotely

     -E, --cipher-per-proto        checks those per protocol

     -f, --ciphers                 checks common cipher suites

     -p, --protocols               checks TLS/SSL protocols (including SPDY/HTTP2)

     -y, --spdy, --npn             checks for SPDY/NPN

     -Y, --http2, --alpn           checks for HTTP2/ALPN

     -S, --server-defaults         displays the server's default picks and certificate info

     -P, --server-preference       displays the server's picks: protocol+cipher

     -x, --single-cipher <pattern> tests matched <pattern> of ciphers

                                   (if <pattern> not a number: word match)

     -c, --client-simulation       test client simulations, see which client negotiates with cipher and protocol

     -H, --header, --headers       tests HSTS, HPKP, server/app banner, security headers, cookie, reverse proxy, IPv4 address



     -U, --vulnerable              tests all vulnerabilities

     -B, --heartbleed              tests for heartbleed vulnerability

     -I, --ccs, --ccs-injection    tests for CCS injection vulnerability

     -R, --renegotiation           tests for renegotiation vulnerabilities

     -C, --compression, --crime    tests for CRIME vulnerability

     -T, --breach                  tests for BREACH vulnerability

     -O, --poodle                  tests for POODLE (SSL) vulnerability

     -Z, --tls-fallback            checks TLS_FALLBACK_SCSV mitigation

     -F, --freak                   tests for FREAK vulnerability

     -A, --beast                   tests for BEAST vulnerability

     -J, --logjam                  tests for LOGJAM vulnerability

     -D, --drown                   tests for DROWN vulnerability

     -s, --pfs, --fs, --nsa        checks (perfect) forward secrecy settings

     -4, --rc4, --appelbaum        which RC4 ciphers are being offered?



special invocations:

     -t, --starttls <protocol>     does a default run against a STARTTLS enabled <protocol>

     --xmpphost <to_domain>        for STARTTLS enabled XMPP it supplies the XML stream to-'' domain -- sometimes needed

     --mx <domain/host>            tests MX records from high to low priority (STARTTLS, port 25)

     --ip <ip>                     a) tests the supplied <ip> v4 or v6 address instead of resolving host(s) in URI

                                   b) arg "one" means: just test the first DNS returns (useful for multiple IPs)

     --file <fname>                mass testing option: Reads command lines from <fname>, one line per instance.

                                   Comments via # allowed, EOF signals end of <fname>. Implicitly turns on "--warnings batch"



partly mandatory parameters:

     URI                           host|host:port|URL|URL:port   (port 443 is assumed unless otherwise specified)

     pattern                       an ignore case word pattern of cipher hexcode or any other string in the name, kx or bits

     protocol                      is one of the STARTTLS protocols ftp,smtp,pop3,imap,xmpp,telnet,ldap

                                   (for the latter two you need e.g. the supplied openssl)



tuning options (can also be preset via environment variables):

     --bugs                        enables the "-bugs" option of s_client, needed e.g. for some buggy F5s

     --assume-http                 if protocol check fails it assumes HTTP protocol and enforces HTTP checks

     --ssl-native                  fallback to checks with OpenSSL where sockets are normally used

     --openssl <PATH>              use this openssl binary (default: look in $PATH, $RUN_DIR of testssl.sh)

     --proxy <host>:<port>         connect via the specified HTTP proxy

     -6                            use also IPv6. Works only with supporting OpenSSL version and IPv6 connectivity

     --sneaky                      leave less traces in target logs: user agent, referer



output options (can also be preset via environment variables):

     --warnings <batch|off|false>  "batch" doesn't wait for keypress, "off" or "false" skips connection warning

     --quiet                       don't output the banner. By doing this you acknowledge usage terms normally appearing in the banner

     --wide                        wide output for tests like RC4, BEAST. PFS also with hexcode, kx, strength, RFC name

     --show-each                   for wide outputs: display all ciphers tested -- not only succeeded ones

     --mapping <no-rfc>            don't display the RFC Cipher Suite Name

     --color <0|1|2>               0: no escape or other codes,  1: b/w escape codes,  2: color (default)

     --colorblind                  swap green and blue in the output

     --debug <0-6>                 1: screen output normal but keeps debug output in /tmp/.  2-6: see "grep -A 5 '^DEBUG=' testssl.sh"



file output options (can also be preset via environment variables):

     --log, --logging              logs stdout to <NODE-YYYYMMDD-HHMM.log> in current working directory

     --logfile <logfile>           logs stdout to <file/NODE-YYYYMMDD-HHMM.log> if file is a dir or to specified log file

     --json                        additional output of findings to JSON file <NODE-YYYYMMDD-HHMM.json> in cwd

     --jsonfile <jsonfile>         additional output to JSON and output JSON to the specified file

     --csv                         additional output of findings to CSV file  <NODE-YYYYMMDD-HHMM.csv> in cwd

     --csvfile <csvfile>           set output to CSV and output CSV to the specified file

     --append                      if <csvfile> or <jsonfile> exists rather append then overwrite



All options requiring a value can also be called with '=' e.g. testssl.sh -t=smtp --wide --openssl=/usr/bin/openssl <URI>.



<URI> is always the last parameter.



Need HTML output? Just pipe through "aha" (ANSI HTML Adapter: github.com/theZiz/aha) like



   "testssl.sh <options> <URI> | aha >output.html"



userid@somehost:~ %