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87ed0b2bb9
* chore: fix non-constant fmt string in call Signed-off-by: Dwi Siswanto <git@dw1.io> * build: bump all direct modules Signed-off-by: Dwi Siswanto <git@dw1.io> * chore(hosterrorscache): update import path Signed-off-by: Dwi Siswanto <git@dw1.io> * fix(charts): break changes Signed-off-by: Dwi Siswanto <git@dw1.io> * build: pinned `github.com/zmap/zcrypto` to v0.0.0-20240512203510-0fef58d9a9db Signed-off-by: Dwi Siswanto <git@dw1.io> * chore: golangci-lint auto fixes Signed-off-by: Dwi Siswanto <git@dw1.io> * chore: satisfy lints Signed-off-by: Dwi Siswanto <git@dw1.io> * build: migrate `github.com/xanzy/go-gitlab` => `gitlab.com/gitlab-org/api/client-go` Signed-off-by: Dwi Siswanto <git@dw1.io> * feat(json): update build constraints Signed-off-by: Dwi Siswanto <git@dw1.io> * chore: dont panicking on close err Signed-off-by: Dwi Siswanto <git@dw1.io> --------- Signed-off-by: Dwi Siswanto <git@dw1.io>
76 lines
2.6 KiB
Go
76 lines
2.6 KiB
Go
package smb
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import (
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"bytes"
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"context"
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"errors"
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"net"
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"strconv"
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"time"
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"github.com/projectdiscovery/nuclei/v3/pkg/js/libs/structs"
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"github.com/projectdiscovery/nuclei/v3/pkg/protocols/common/protocolstate"
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"github.com/projectdiscovery/utils/reader"
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)
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const (
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pkt = "\x00\x00\x00\xc0\xfeSMB@\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00$\x00\x08\x00\x01\x00\x00\x00\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00x\x00\x00\x00\x02\x00\x00\x00\x02\x02\x10\x02\"\x02$\x02\x00\x03\x02\x03\x10\x03\x11\x03\x00\x00\x00\x00\x01\x00&\x00\x00\x00\x00\x00\x01\x00 \x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\n\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00"
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)
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// DetectSMBGhost tries to detect SMBGhost vulnerability
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// by using SMBv3 compression feature.
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// If the host is vulnerable, it returns true.
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// @example
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// ```javascript
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// const smb = require('nuclei/smb');
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// const isSMBGhost = smb.DetectSMBGhost('acme.com', 445);
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// ```
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func (c *SMBClient) DetectSMBGhost(host string, port int) (bool, error) {
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return memoizeddetectSMBGhost(host, port)
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}
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// @memo
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func detectSMBGhost(host string, port int) (bool, error) {
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if !protocolstate.IsHostAllowed(host) {
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// host is not valid according to network policy
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return false, protocolstate.ErrHostDenied.Msgf(host)
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}
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addr := net.JoinHostPort(host, strconv.Itoa(port))
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conn, err := protocolstate.Dialer.Dial(context.TODO(), "tcp", addr)
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if err != nil {
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return false, err
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}
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defer func() {
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_ = conn.Close()
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}()
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_, err = conn.Write([]byte(pkt))
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if err != nil {
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return false, err
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}
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buff, _ := reader.ConnReadNWithTimeout(conn, 4, time.Duration(5)*time.Second)
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args, err := structs.Unpack(">I", buff)
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if err != nil {
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return false, err
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}
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if len(args) != 1 {
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return false, errors.New("invalid response")
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}
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length := args[0].(int)
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_ = conn.SetReadDeadline(time.Now().Add(2 * time.Second))
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data, err := reader.ConnReadNWithTimeout(conn, int64(length), time.Duration(5)*time.Second)
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if err != nil {
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return false, err
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}
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if len(data) < 72 {
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return false, errors.New("invalid response expected at least 72 bytes")
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}
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if !bytes.Equal(data[68:70], []byte("\x11\x03")) || !bytes.Equal(data[70:72], []byte("\x02\x00")) {
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return false, nil
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}
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return true, nil
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}
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