java GSSException: 消息流已修改 (41)
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时间：2020-10-31 21:19:30 来源:igfitidea点击:
GSSException: Message stream modified (41)
提问by Matan
I'm working with an LDAP in forest architecture (all servers and my server are windows). I'm binding to the AD using NTLM authentication.
我正在使用森林架构中的 LDAP（所有服务器和我的服务器都是 Windows）。我正在使用 NTLM 身份验证绑定到 AD。
I have a JAVA code that perform the operations against the LDAP server.
我有一个对 LDAP 服务器执行操作的 JAVA 代码。
The code is wrapped as a tomcat servlet.
代码被包装成一个 tomcat servlet。
When running the JAVA code directly (just executing the LDAP authentication code as an application), the bind works both against the local domain (local domain = I logged in to windows, and ran this process with a user of this domain) and foreign domains.
当直接运行 JAVA 代码（只是将 LDAP 身份验证代码作为应用程序执行）时，绑定既适用于本地域（本地域 = 我登录到 Windows，并与该域的用户一起运行此进程）和外部域.
When running the JAVA code as a servlet, the bind works and authenticates users from one domain but does not work if I'm trying to authenticate users from other domain, it won't work (it will work only if I'll restart tomcat).
当将 JAVA 代码作为 servlet 运行时，绑定工作并验证来自一个域的用户，但如果我尝试验证来自其他域的用户则不起作用，它将不起作用（只有在我重新启动 tomcat 时它才起作用） ）。
I'm getting an exception:
我得到一个例外：
GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Message stream modified (41))]]
I'll mention that it is the same code, with the same configurations and the same krb5 file.
我会提到它是相同的代码，具有相同的配置和相同的 krb5 文件。
Edit:More information:
编辑：更多信息：
This is my code:
这是我的代码：
public void func(String realm, String kdc) {
try {
URL configURL = getClass().getResource("jaas_ntlm_configuration.txt");
System.setProperty("java.security.auth.login.config", configURL.toString());
System.setProperty("java.security.krb5.realm", realm);
System.setProperty("java.security.krb5.kdc",kdc);
// If the application is run on NT rather than Unix, use this name
String loginAppName = "MyConfig";
// Create login context
LoginContext lc = new LoginContext(loginAppName, new SampleCallbackHandler());
// Retrieve the information on the logged-in user
lc.login();
// Get the authenticated subject
Subject subject = lc.getSubject();
System.out.println(subject.toString());
Subject.doAs(subject, new JndiAction(new String[] { "" }));
}
catch (LoginException e) {
e.printStackTrace();
}
}
class JndiAction implements java.security.PrivilegedAction {
private String[] args;
public JndiAction(String[] origArgs) {
this.args = (String[])origArgs.clone();
}
public Object run() {
performJndiOperation(args);
return null;
}
private static void performJndiOperation(String[] args) {
// Set up environment for creating initial context
Hashtable env = new Hashtable(11);
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
// Must use fully qualified hostname
env.put(Context.PROVIDER_URL, "ldap://server:389");
// Request the use of the "GSSAPI" SASL mechanism
// Authenticate by using already established Kerberos credentials
env.put(Context.SECURITY_AUTHENTICATION, "GSSAPI");
try {
// Create the initial context
DirContext ctx = new InitialLdapContext(env, null);
// Close the context when we're done
ctx.close();
} catch (NamingException e) {
e.printStackTrace();
}
}
}
And my jaas_ntlm_configuration.txt file contains:
我的 jaas_ntlm_configuration.txt 文件包含：
MyConfig { com.sun.security.auth.module.Krb5LoginModule required
useTicketCache=true
doNotPrompt=false;
};
My krb5.conf file is:
我的 krb5.conf 文件是：
#
# All rights reserved.
#
#pragma ident @(#)krb5.conf 1.1 00/12/08
[libdefaults]
default_tkt_enctypes = des3-cbc-sha1 des-cbc-md5 des-cbc-crc
default_tgs_enctypes = des3-cbc-sha1 des-cbc-md5 des-cbc-crc
forwardable = true
renewable = true
noaddresses = true
clockskew = 300
[realms]
SUB1.DOMAIN.COM = {
kdc = DDC.SUB1.DOMAIN.COM
default_domain=DOMAIN.COM
}
SUB2.DOMAIN.COM = {
kdc = DDC.SUB.DOMAIN.COM
default_domain=DOMAIN.COM
}
SUB3.DOMAIN.COM = {
kdc = DDC.SUB3.DOMAIN.COM
default_domain=DOMAIN.COM
}
[domain_realm]
.DOMAIN.COM = SUB1.DOMAIN.COM
.DOMAIN.COM = SUB2.DOMAIN.COM
.DOMAIN.COM = SUB3.DOMAIN.COM
[logging]
default = FILE:/var/krb5/kdc.log
kdc = FILE:/var/krb5/kdc.log
kdc_rotate = {
# How often to rotate kdc.log. Logs will get rotated no more
# often than the period, and less often if the KDC is not used
# frequently.
period = 1d
# how many versions of kdc.log to keep around (kdc.log.0, kdc.log.1, ...)
versions = 10
}
[appdefaults]
kinit = {
renewable = true
forwardable= true
}
rlogin = {
forwardable= true
}
rsh = {
forwardable= true
}
telnet = {
autologin = true
forwardable= true
}
I added the following as java parameters:
我添加了以下作为java参数：
-Djavax.security.auth.useSubjectCredsOnly=false -Djava.security.krb5.conf="krb5.conf" -Dsun.security.krb5.debug=true
If I call func("SUB*.DOMAIN.COM", "DDC.SUB*.DOMAIN.COM") always with the same subdomain - it will work, but if I'll call with one subdomain and then with another, the second will fail.
如果我总是使用相同的子域调用 func("SUB*.DOMAIN.COM", "DDC.SUB*.DOMAIN.COM") - 它会起作用，但是如果我先用一个子域调用，然后再用另一个子域调用，则第二个会失败。
More information:
更多信息：
Here is the output with krb5.debug=true:
这是 krb5.debug=true 的输出：
java -Xmx100m -cp gssapi_test.jar -Djavax.security.auth.useSubjectCredsOnly=false -Djava.security.krb5.conf="krb5.conf" -Dsun.security.krb5.debug=true gssapitest.myTest my_config.txt
2 users provided. Performing authentication #1
Reading configuration file my_config.txt
kdc: DDC.SUB1.DOMAIN.COM, realm: SUB1.DOMAIN.COM
>>>KinitOptions cache name is C:\Users\user1\krb5cc_user1
>> Acquire default native Credentials
>>> Obtained TGT from LSA: Credentials:
[email protected]
server=krbtgt/[email protected]
authTime=20130422075139Z
startTime=20130422075139Z
endTime=20130422175139Z
renewTill=20130429075139Z
flags: FORWARDABLE;RENEWABLE;INITIAL;PRE-AUTHENT
EType (int): 23
Subject:
Principal: [email protected]
Private Credential: Ticket (hex) =
.....
Client Principal = [email protected]
Server Principal = krbtgt/[email protected]
Session Key = EncryptionKey: keyType=23 keyBytes (hex dump)=
0000: 2B 8C 97 3C 8E 83 66 F1 6D 58 6C 37 20 0E 1F 53 +..<..f.mXl7 ..S
Forwardable Ticket true
Forwarded Ticket false
Proxiable Ticket false
Proxy Ticket false
Postdated Ticket false
Renewable Ticket true
Initial Ticket true
Auth Time = Mon Apr 22 15:51:39 2013
Start Time = Mon Apr 22 15:51:39 2013
End Time = Tue Apr 23 01:51:39 2013
Renew Till = Mon Apr 29 15:51:39 2013
Client Addresses Null
Connecting to LDAP
Config name: krb5.conf
Found ticket for [email protected] to go to krbtgt/[email protected] expiring on Tue Apr 23 01:51:39 2013
Entered Krb5Context.initSecContext with state=STATE_NEW
Service ticket not found in the subject
>>> Credentials acquireServiceCreds: same realm
default etypes for default_tgs_enctypes: 16 3 1.
>>> CksumType: sun.security.krb5.internal.crypto.RsaMd5CksumType
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
>>> KdcAccessibility: reset
>>> KrbKdcReq send: kdc=DDC.SUB1.DOMAIN.COM UDP:88, timeout=30000, number of retries =3, #bytes=1554
>>> KDCCommunication: kdc=DDC.SUB1.DOMAIN.COM UDP:88, timeout=30000,Attempt =1, #bytes=1554
>>> KrbKdcReq send: #bytes read=107
>>> KrbKdcReq send: kdc=DDC.SUB1.DOMAIN.COM TCP:88, timeout=30000, number of retries =3, #bytes=1554
>>> KDCCommunication: kdc=DDC.SUB1.DOMAIN.COM TCP:88, timeout=30000,Attempt =1, #bytes=1554
>>>DEBUG: TCPClient reading 1497 bytes
>>> KrbKdcReq send: #bytes read=1497
>>> KdcAccessibility: remove DDC.SUB1.DOMAIN.COM
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
>>> KrbApReq: APOptions are 00000000 00000000 00000000 00000000
>>> EType: sun.security.krb5.internal.crypto.DesCbcMd5EType
Krb5Context setting mySeqNumber to: 1005735013
Krb5Context setting peerSeqNumber to: 0
Created InitSecContextToken:
.....
Krb5Context.unwrap: token=[60 33 06 09 2a 86 48 86 f7 12 01 02 02 02 01 00 00 ff ff ff ff 94 52 14 5b f6 02 28 1c a4 3c c5 8f 03 9c a2 d6 e5 f6 f1 18 ed 6f 16 ab 07 a0 00 00 04 04 04 04 ]
Krb5Context.unwrap: data=[07 a0 00 00 ]
Krb5Context.wrap: data=[01 01 00 00 ]
Krb5Context.wrap: token=[60 33 06 09 2a 86 48 86 f7 12 01 02 02 02 01 00 00 ff ff ff ff 2d b6 92 0d d9 51 da aa ef 41 67 33 5c de b3 e6 ce 9a 46 31 a0 a8 0e 27 01 01 00 00 04 04 04 04 ]
Connected
Disconnected
#1: Done
Performing authentication #2
Reading configuration file my_config.txt
kdc: DDC.SUB2.DOMAIN.COM, realm: SUB2.DOMAIN.COM
>>>KinitOptions cache name is C:\Users\user1\krb5cc_user1
>> Acquire default native Credentials
>>> Obtained TGT from LSA: Credentials:
[email protected]
server=krbtgt/[email protected]
authTime=20130422075139Z
startTime=20130422075139Z
endTime=20130422175139Z
renewTill=20130429075139Z
flags: FORWARDABLE;RENEWABLE;INITIAL;PRE-AUTHENT
EType (int): 23
Subject:
Principal: [email protected]
Private Credential: Ticket (hex) =
.....
Client Principal = [email protected]
Server Principal = krbtgt/[email protected]
Session Key = EncryptionKey: keyType=23 keyBytes (hex dump)=
0000: 2B 8C 97 3C 8E 83 66 F1 6D 58 6C 37 20 0E 1F 53 +..<..f.mXl7 ..S
Forwardable Ticket true
Forwarded Ticket false
Proxiable Ticket false
Proxy Ticket false
Postdated Ticket false
Renewable Ticket true
Initial Ticket true
Auth Time = Mon Apr 22 15:51:39 2013
Start Time = Mon Apr 22 15:51:39 2013
End Time = Tue Apr 23 01:51:39 2013
Renew Till = Mon Apr 29 15:51:39 2013
Client Addresses Null
Connecting to LDAP
Found ticket for [email protected] to go to krbtgt/[email protected] expiring on Tue Apr 23 01:51:39 2013
Entered Krb5Context.initSecContext with state=STATE_NEW
Service ticket not found in the subject
>>> Credentials acquireServiceCreds: same realm
default etypes for default_tgs_enctypes: 16 3 1.
>>> CksumType: sun.security.krb5.internal.crypto.RsaMd5CksumType
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
>>> KrbKdcReq send: kdc=DDC.SUB1.DOMAIN.COM UDP:88, timeout=30000, number of retries =3, #bytes=1554
>>> KDCCommunication: kdc=DDC.SUB1.DOMAIN.COM UDP:88, timeout=30000,Attempt =1, #bytes=1554
>>> KrbKdcReq send: #bytes read=107
>>> KrbKdcReq send: kdc=DDC.SUB1.DOMAIN.COM TCP:88, timeout=30000, number of retries =3, #bytes=1554
>>> KDCCommunication: kdc=DDC.SUB1.DOMAIN.COM TCP:88, timeout=30000,Attempt =1, #bytes=1554
>>>DEBUG: TCPClient reading 1482 bytes
>>> KrbKdcReq send: #bytes read=1482
>>> KdcAccessibility: remove DDC.SUB1.DOMAIN.COM
>>> EType: sun.security.krb5.internal.crypto.ArcFourHmacEType
KrbException: Message stream modified (41)
at sun.security.krb5.KrbKdcRep.check(Unknown Source)
at sun.security.krb5.KrbTgsRep.<init>(Unknown Source)
at sun.security.krb5.KrbTgsReq.getReply(Unknown Source)
at sun.security.krb5.KrbTgsReq.sendAndGetCreds(Unknown Source)
at sun.security.krb5.internal.CredentialsUtil.serviceCreds(Unknown Source)
at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(Unknown Source)
at sun.security.krb5.Credentials.acquireServiceCreds(Unknown Source)
at sun.security.jgss.krb5.Krb5Context.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(Unknown Source)
at com.sun.jndi.ldap.sasl.LdapSasl.saslBind(Unknown Source)
at com.sun.jndi.ldap.LdapClient.authenticate(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.ldap.InitialLdapContext.<init>(Unknown Source)
at gssapitest.JndiAction.performJndiOperation(myTest.java:603)
at gssapitest.JndiAction.run(myTest.java:577)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Unknown Source)
at gssapitest.myTest.Do(myTest.java:59)
at gssapitest.myTest.main(myTest.java:513)
javax.naming.AuthenticationException: GSSAPI [Root exception is javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Message stream modified (41))]]
at com.sun.jndi.ldap.sasl.LdapSasl.saslBind(Unknown Source)
at com.sun.jndi.ldap.LdapClient.authenticate(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.connect(Unknown Source)
at com.sun.jndi.ldap.LdapCtx.<init>(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(Unknown Source)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.ldap.InitialLdapContext.<init>(Unknown Source)
at gssapitest.JndiAction.performJndiOperation(myTest.java:603)
at gssapitest.JndiAction.run(myTest.java:577)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Unknown Source)
at gssapitest.myTest.Do(myTest.java:59)
at gssapitest.myTest.main(myTest.java:513)
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Message stream modified (41))]
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(Unknown Source)
... 18 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Message stream modified (41))
at sun.security.jgss.krb5.Krb5Context.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
at sun.security.jgss.GSSContextImpl.initSecContext(Unknown Source)
... 19 more
Caused by: KrbException: Message stream modified (41)
at sun.security.krb5.KrbKdcRep.check(Unknown Source)
at sun.security.krb5.KrbTgsRep.<init>(Unknown Source)
at sun.security.krb5.KrbTgsReq.getReply(Unknown Source)
at sun.security.krb5.KrbTgsReq.sendAndGetCreds(Unknown Source)
at sun.security.krb5.internal.CredentialsUtil.serviceCreds(Unknown Source)
at sun.security.krb5.internal.CredentialsUtil.acquireServiceCreds(Unknown Source)
at sun.security.krb5.Credentials.acquireServiceCreds(Unknown Source)
... 22 more
FAILED
What can I do? Am I doings something wrongs?
我能做什么？我做错了吗？
Thanks.
谢谢。
回答by Nika Gerson Lohman
Thanks for this! Just for reference, uppercase of the realm (ie. the realm should be 100% correct and in uppercase) is very important to avoid "Exception: krb_error 41 Message stream modified (41) ".
谢谢你！仅供参考，领域的大写（即领域应该是 100% 正确且大写）对于避免“异常：krb_error 41 消息流已修改（41）”非常重要。
Here's an example of correct notation:
下面是一个正确符号的例子：
[libdefaults]
default_realm = EXAMPLE.COM
[realms]
EXAMPLE.COM = {
kdc = domaincontroller.example.com
admin_server = domaincontroller.example.com
default_domain = EXAMPLE.COM
}
[domain_realm]
.example.com = EXAMPLE.COM
example.com = EXAMPLE.COM
Regards,
问候，
Nika.
尼卡。
回答by Michael-O
NTLM != Kerberos. Java SASL does not support NTLM. Configure Kerberos properly and it'll work.
NTLM != Kerberos。Java SASL 不支持 NTLM。正确配置 Kerberos，它就会工作。
