[SOLVED] Is this considered a bug or it is intentional?
Hello
I just found something interesting.
Open a terminal and become root. Run a program (like `php`) which will wait for user input.
Now run `lsof -p` and find devices for its input/output (file descriptors numbered 0,1,2 which is at /dev/pts on my system). Lets say it is /dev/pts/2.
Now if you see `ls -l /dev/pts`, you can see that /dev/pts/2 (and all other number which are input/output for other processes) are owning by my user!
So this means I can access them and read/write them. I tested this in a python shell and I can totally read/write on input/output of that process.
Although I can't run `lsof -p` for that root process under my own user, this is still some kind of problem.
So I thought this could be a security issue. Reading/writing a root process' input/output from a normal user may lead to abuse.
Is this intentional? A security bug, in kernel, maybe?
Where to report this bug, if it is?
Thank you
P.S. I couldn't find anywhere related to security in forum, so I posted this here. If it is in wrong place, please move it.
Last edited by thelastblack (2014-08-15 11:18:22)
I can't replicate this.
Yes, the pts is owner by my user, but that is not the root process, that is the terminal session that I opened as a regular user. I open one urxvt window - call it urxvtA - that creates /dev/pts/0 owned by my user. Then I open another - urxvtB - also as a regular user, and /dev/pts/1 is created and owned by my user. I 'su' in urxvtB, no new pts is created, by /dev/ptsB is still owned by my user, of course. From urxvtA I can write commands to /dev/pts/1 and they will show up in urxvtB, but they will not be executed.
The /dev/pts/# are not the stdin and stdout of the process running in the terminal session (those are under /proc/), but they are just the connection to the original shell launched in that terminal.
Further and more clear evidence: I start fresh again with no terminals running. I start urxvtA which creates /dev/pts/0 owned by my user. From that shell I I 'su' then from the root shell session I launch another urxvt (urxvtB). As previously this creates /dev/pts/1, but this time /dev/pts/1 is owned by root.
The pty session in the first case is executed by my user. The terminal was opened as a regular user, and so a regular user can read what's in that terminal and type things into that terminal.
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** Original post **
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at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
Caused by: java.lang.SecurityException: Cannot set up certs for trusted CAs
at javax.crypto.SunJCE_b.(DashoA6275)
... 33 more
Caused by: java.security.PrivilegedActionException: java.security.InvalidKeyException:
InitVerify error: java.security.NoSuchAlgorithmException: Cannot find any provider
supporting RSA/ECB/PKCS1Padding
at java.security.AccessController.doPrivileged(Native Method)
... 34 more
Caused by: java.security.InvalidKeyException: InitVerify error: java.security.NoSuchAlgorithmException:
Cannot find any provider supporting RSA/ECB/PKCS1Padding
at iaik.security.rsa.RSASignature.engineInitVerify(RSASignature.java)
at java.security.Signature.initVerify(Signature.java:297)
at iaik.x509.X509Certificate.verify(X509Certificate.java)
at iaik.x509.X509Certificate.verify(X509Certificate.java)
at javax.crypto.SunJCE_b.c(DashoA6275)
at javax.crypto.SunJCE_b.b(DashoA6275)
at javax.crypto.SunJCE_s.run(DashoA6275)
... 35 moreHi all,
Please help....I really don't know what to do with this problem as have try all methods that I know of...
I suspect is this a Welogic bug? It happens intermittently too.....
Need help on this weird exception i have. My stateless session EJB attempts to
create an transaction when the exception occurs. My server is WL8.1 powered by
Jdk1.4.2_05. My server is not using SSL, so find it strange that some certification
is involved.
java.lang.ExceptionInInitializerError
at javax.crypto.Cipher.a(DashoA6275)
at javax.crypto.Cipher.getInstance(DashoA6275)
at com.entrust.toolkit.security.provider.AnsiRandom1.engineSetSeed(AnsiRandom1.java)
at java.security.SecureRandom.setSeed(SecureRandom.java:369)
at weblogic.transaction.internal.XidImpl.seedRandomGenerator(XidImpl.java:378)
at weblogic.transaction.internal.XidImpl.create(XidImpl.java:266)
at weblogic.transaction.internal.TransactionManagerImpl.getNewXID(TransactionManagerImpl.java:1719)
at weblogic.transaction.internal.TransactionManagerImpl.internalBegin(TransactionManagerImpl.java:249)
at weblogic.transaction.internal.ServerTransactionManagerImpl.internalBegin(ServerTransactionManagerImpl.java:303)
at weblogic.transaction.internal.ServerTransactionManagerImpl.begin(ServerTransactionManagerImpl.java:259)
at weblogic.ejb20.internal.MethodDescriptor.startTransaction(MethodDescriptor.java:255)
at weblogic.ejb20.internal.MethodDescriptor.getInvokeTx(MethodDescriptor.java:377)
at weblogic.ejb20.internal.EJBRuntimeUtils.createWrapWithTxs(EJBRuntimeUtils.java:325)
at weblogic.ejb20.internal.StatelessEJBObject.preInvoke(StatelessEJBObject.java:64)
at care2.preEnlisteeMgmt.business.assignmInstr.assignmInstrMgr.AssignmInstrMgrBean_xghsg0_EOImpl.setAssignmInstrs(AssignmInstrMgrBean_xghsg0_EOImpl.java:85)
at care2.preEnlisteeMgmt.business.assignmInstr.AssignmInstrDelegate.setAssignmInstrs(AssignmInstrDelegate.java:116)
at care2.presentation.assignmInstr.AssignmInstrDisplayAction.execute(AssignmInstrDisplayAction.java:205)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:402)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:305)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6350)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:317)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3635)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2585)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
Caused by: java.lang.SecurityException: Cannot set up certs for trusted CAs
at javax.crypto.SunJCE_b.(DashoA6275)
... 33 more
Caused by: java.security.PrivilegedActionException: java.security.InvalidKeyException:
InitVerify error: java.security.NoSuchAlgorithmException: Cannot find any provider
supporting RSA/ECB/PKCS1Padding
at java.security.AccessController.doPrivileged(Native Method)
... 34 more
Caused by: java.security.InvalidKeyException: InitVerify error: java.security.NoSuchAlgorithmException:
Cannot find any provider supporting RSA/ECB/PKCS1Padding
at iaik.security.rsa.RSASignature.engineInitVerify(RSASignature.java)
at java.security.Signature.initVerify(Signature.java:297)
at iaik.x509.X509Certificate.verify(X509Certificate.java)
at iaik.x509.X509Certificate.verify(X509Certificate.java)
at javax.crypto.SunJCE_b.c(DashoA6275)
at javax.crypto.SunJCE_b.b(DashoA6275)
at javax.crypto.SunJCE_s.run(DashoA6275)
... 35 more
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