if caPath != "" {
pool, err := newCertPool(caPath)
if err != nil {
return nil, err
}
base.ClientAuth = tls.RequireAndVerifyClientCert
base.ClientCAs = pool
//20240206 TLS CVE-2016-2183
base.MinVersion = tls.VersionTLS12
base.PreferServerCipherSuites = true
base.CipherSuites = []uint16{
tls.TLS\_RSA\_WITH\_AES\_128\_GCM\_SHA256,
tls.TLS\_RSA\_WITH\_AES\_256\_GCM\_SHA384,
tls.TLS\_RSA\_WITH\_AES\_128\_CBC\_SHA,
tls.TLS\_RSA\_WITH\_AES\_256\_CBC\_SHA,
}
}
在 NewClientTLSConfig 方法里面增加如下内容
if caPath != "" {
pool, err := newCertPool(caPath)
if err != nil {
return nil, err
}
base.RootCAs = pool
base.InsecureSkipVerify = false
//20240206 TLS CVE-2016-2183
base.PreferServerCipherSuites = false
base.MinVersion = tls.VersionTLS12
base.CipherSuites = []uint16{
tls.TLS\_RSA\_WITH\_AES\_128\_GCM\_SHA256,
tls.TLS\_RSA\_WITH\_AES\_256\_GCM\_SHA384,
tls.TLS\_RSA\_WITH\_AES\_128\_CBC\_SHA,
tls.TLS\_RSA\_WITH\_AES\_256\_CBC\_SHA,
}
} else {
base.InsecureSkipVerify = true
}
重新编译frp即可
go build -trimpath -ldflags "-s -w" -buildvcs=false -o bin/frps ./cmd/frps
go build -trimpath -ldflags "-s -w" -buildvcs=false -o bin/frpc ./cmd/frpc
效果检查 ：
修复前进行扫描：
root@armbian:~# nmap -sV -p 7000 --script ssl-enum-ciphers X.X.X.X
Starting Nmap 7.80 ( nmap.org ) at 2024-02-06 12:47 CST
Nmap scan report for X.X.X.X
Host is up (0.0060s latency).
PORT STATE SERVICE VERSION
7000/tcp open ssl/unknown
| ssl-enum-ciphers:
| TLSv1.0:
| ciphers:
| TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_3DES_EDE_CBC_SHA (rsa 2048) - C
| compressors:
| NULL
| cipher preference: server
| warnings:
| 64-bit block cipher 3DES vulnerable to SWEET32 attack
| Forward Secrecy not supported by any cipher
| TLSv1.1:
| ciphers:
| TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_3DES_EDE_CBC_SHA (rsa 2048) - C
| compressors:
| NULL
| cipher preference: server
| warnings:
| 64-bit block cipher 3DES vulnerable to SWEET32 attack
| Forward Secrecy not supported by any cipher
| TLSv1.2:
| ciphers:
| TLS_RSA_WITH_AES_128_GCM_SHA256 (rsa 2048) - A
| TLS_RSA_WITH_AES_256_GCM_SHA384 (rsa 2048) - A
| TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_3DES_EDE_CBC_SHA (rsa 2048) - C
| compressors:
| NULL
| cipher preference: server
| warnings:
| 64-bit block cipher 3DES vulnerable to SWEET32 attack
| Forward Secrecy not supported by any cipher
|_ least strength: C
Service detection performed. Please report any incorrect results at nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 22.19 seconds
修复隐患后重新扫描：
root@armbian:~# nmap -sV -p 7000 --script ssl-enum-ciphers X.X.X.X
Starting Nmap 7.80 ( nmap.org ) at 2024-02-06 13:19 CST
Nmap scan report for X.X.X.X
Host is up (0.0039s latency).
PORT STATE SERVICE VERSION
7000/tcp open ssl/unknown
| ssl-enum-ciphers:
| TLSv1.2:
| ciphers:
| TLS_RSA_WITH_AES_128_GCM_SHA256 (rsa 2048) - A
| TLS_RSA_WITH_AES_256_GCM_SHA384 (rsa 2048) - A
| TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A
| TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A
| compressors:
| NULL
| cipher preference: server
| warnings:
| Forward Secrecy not supported by any cipher
|_ least strength: A
Service detection performed. Please report any incorrect results at nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 21.06 seconds
可以看到，修复效果非常明显，相信不会再被扫描出漏洞了。
本人已经向FRP官方提交PR，希望能够获得通过
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