search for: pamauthenticationviakbdint

Hi there, when enabling the option PAMAuthenticationViaKbdInt, a login with password is always possible, even though when you disabled it with PasswordAuthentication no and PermitRootLogin without-password! Is this intended? Why is there no documentation about this (or at least a waring in the default configuration file)? The problem is, it is enabled in...

...ccepted for user "ed" Jul 2 12:23:39 remedy.udel.edu sshd[6811]: [ID 800047 local4.info] Accepted password for ed from 128.175.1.9 port 33485 ssh2 --- What is a typical example of PAM "challenge response" authentication as referred to in sshd(8) under the explanation for "PAMAuthenticationViaKbdInt"? Just a sanity check... Thanks, Ed Ed Phillips <ed at udel.edu> University of Delaware (302) 831-6082 Systems Programmer III, Network and Systems Services finger -l ed at polycut.nss.udel.edu for PGP public key

...of the Advisory. 1. Versions affected: Serveral versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an input validation error that can result in an integer overflow and privilege escalation. All versions between 2.3.1 and 3.3 contain a bug in the PAMAuthenticationViaKbdInt code. All versions between 2.9.9 and 3.3 contain a bug in the ChallengeResponseAuthentication code. OpenSSH 3.4 and later are not affected. OpenSSH 3.2 and later prevent privilege escalation if UsePrivilegeSeparation is enabled in sshd_config. OpenSSH...

...the same session... [root at toadhall (19) ssh]# grep Auth /etc/ssh/sshd_config RhostsAuthentication no RhostsRSAAuthentication no HostbasedAuthentication no RSAAuthentication yes PubkeyAuthentication yes PasswordAuthentication no ChallengeResponseAuthentication no KbdInteractiveAuthentication yes PAMAuthenticationViaKbdInt yes [root at toadhall (19) ssh]# sshd -ddd debug1: Seeding random number generator debug1: sshd version OpenSSH_2.9p2 [...] Connection from 127.0.0.1 port 2911 debug1: Client protocol version 2.0; client software version OpenSSH_2.9p2 debug1: match: OpenSSH_2.9p2 pat ^OpenSSH Enabling compatibility...

...Cisco IOS Router to my linux machine, we use to see only one password prompt , even though we configured number of password prompts in Linux machine to 3. So, to overcome this issue , someone changed the values in sshd_config file in openssh-3.5pl. Before Fix #ChallengeResponseAuthentication yes #PAMAuthenticationViaKbdInt no After Fix ChallengeResponseAuthentication no PAMAuthenticationViaKbdInt no So, after this when we do ssh from IOs Router, the number of password prompts got increased, means if we configure 1 in linux device, the number of password prompts for wrong password seen is 2. And if we configure 2,...

...of the Advisory. 1. Versions affected: Serveral versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an input validation error that can result in an integer overflow and privilege escalation. All versions between 2.3.1 and 3.3 contain a bug in the PAMAuthenticationViaKbdInt code. All versions between 2.9.9 and 3.3 contain a bug in the ChallengeResponseAuthentication code. OpenSSH 3.4 and later are not affected. OpenSSH 3.2 and later prevent privilege escalation if UsePrivilegeSeparation is enabled in sshd_config. OpenSSH...

...Product: Portable OpenSSH Version: -current Platform: All OS/Version: All Status: NEW Severity: trivial Priority: P5 Component: PAM support AssignedTo: openssh-bugs at mindrot.org ReportedBy: aet at cc.hut.fi PAMAuthenticationViaKbdInt is still mentioned on README.privsep Personally, I don't use PAM with ssh but it's most likely a good idea to provide support for PAMAuthenticationViaKbdInt as deprecated option, to help upgrading process etc. ------- You are receiving this mail because: ------- You are the assignee for...

I created snapshot for my whole zpool (zfs version 3): zfs snapshot -r tank@`date +%F_%T` then trid to send it to the remote host: zfs send tank at 2008-07-25_09:31:03 | ssh user at 10.0.1.14 -i identitykey ''zfs receive tank/tankbackup'' but got the error "zfs: command not found" since user is not superuser, even though it is in the root group. I found

...m/txt/preauth.adv 1. Versions affected: Serveral versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an input validation error that can result in an integer overflow and privilege escalation. All versions between 2.3.1 and 3.3 contain a bug in the PAMAuthenticationViaKbdInt code. All versions between 2.9.9 and 3.3 contain a bug in the ChallengeResponseAuthentication code. OpenSSH 3.4 and later are not affected. OpenSSH 3.2 and later prevent privilege escalation if UsePrivilegeSeparation is enabled in sshd_config. OpenSSH...

...m/txt/preauth.adv 1. Versions affected: Serveral versions of OpenSSH's sshd between 2.3.1 and 3.3 contain an input validation error that can result in an integer overflow and privilege escalation. All versions between 2.3.1 and 3.3 contain a bug in the PAMAuthenticationViaKbdInt code. All versions between 2.9.9 and 3.3 contain a bug in the ChallengeResponseAuthentication code. OpenSSH 3.4 and later are not affected. OpenSSH 3.2 and later prevent privilege escalation if UsePrivilegeSeparation is enabled in sshd_config. OpenSSH...

...and hostbased. So there may be multiple types of keyboard-interactive auth, but keyboard-interactive only counts as a single method. So, for example, if you have PasswordAuthentication and PubkeyAuthentication enabled, and set NumRequiredAuthMethods to 2, you will have to pass both types. But PAMAuthenticationViaKbdInt and ChallengeResponseAuthentication are the same authentication method (keyboard-interactive), so if you want to require 2 classes, you'll have to have at least one of the other methods enabled as well. I don't know much about some of the supported authentication types, particularly pam...

On Mon Feb 09 2015 at 1:23:37 PM Petr Lautrbach <plautrba at redhat.com> wrote: > It seems to be the same problem as described and discussed in this > [1] thread. MTU 1400 is not enough for packet sent by > openssh-6.6.1p1-11.1.fc21 with default settings. The size of one > of initial packets could be even 1968. Your VPN probably makes > a fragmentation but doesn't do the

...to no here! PasswordAuthentication yes PermitEmptyPasswords no # Uncomment to disable s/key passwords #ChallengeResponseAuthentication no # Uncomment to enable PAM keyboard-interactive authentication # Warning: enabling this may bypass the setting of ''PasswordAuthentication'' #PAMAuthenticationViaKbdInt yes # To change Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #AFSTokenPassing no #KerberosTicketCleanup no # Kerberos TGT Passing does only work with the AFS kaserver #KerberosTgtPassing yes X11Forwarding yes X11DisplayOffset 256 PrintMotd no #PrintLastLog no KeepAli...

...th-privsep-user=user Specify non-privileged user for privilege separation Privsep requires operating system support for file descriptor passing and mmap(MAP_ANON). PAM-enabled OpenSSH is known to function with privsep on Linux. It does not function on HP-UX with a trusted system configuration. PAMAuthenticationViaKbdInt does not function with privsep. Note that for a normal interactive login with a shell, enabling privsep will require 1 additional process per login session. Given the following process listing (from HP-UX): UID PID PPID C STIME TTY TIME COMMAND root 1005 1 0 10:45:17...

http://bugzilla.mindrot.org/show_bug.cgi?id=774 Summary: banner is displaying twice (/etc/issue) Product: Portable OpenSSH Version: 3.7.1p1 Platform: All OS/Version: Solaris Status: NEW Severity: security Priority: P2 Component: sshd AssignedTo: openssh-bugs at mindrot.org ReportedBy:

PasswordAuthentication seems to be accepted regardless when DSA authentication is not available. Client and server are Linux - openssh-2.5.2p2-1.7.2 Server config is: Port 22 ListenAddress 0.0.0.0 HostKey /etc/ssh/ssh_host_key HostKey /etc/ssh/ssh_host_dsa_key KeyRegenerationInterval 3600 LoginGraceTime 600 ServerKeyBits 768 IgnoreRhosts yes PasswordAuthentication no

...L, (OpCodes)0 } }; /* --- openssh-snap/servconf.c Thu Sep 13 01:32:15 2001 +++ openssh/servconf.c Mon Oct 15 17:34:26 2001 @@ -317,7 +330,7 @@ { "authorizedkeysfile", sAuthorizedKeysFile }, { "authorizedkeysfile2", sAuthorizedKeysFile2 }, { "PAMAuthenticationViaKbdInt", sPAMAuthenticationViaKbdInt }, - { NULL, 0 } + { NULL, (ServerOpCodes)0 } }; /*

...Smorgrav's PAM support for OpenSSH (from FreeBSD). IMO it is a good deal cleaner than the existing PAM code and I'd like to see it imported soon. The code removes the existing PAM password authentication in favor of doing it all via keyboard-interactive. The diff therefore removes the PAMAuthenticationViaKbdInt config item. It also has support for POSIX threads, which is needed (I'm told) for modules like pam_krb5. I have tested this with my basic PAM config, but the patch doesn't include the configure glue to make it work. Since this is a disruptive change, I'd like to get some testing...

...ly to be of interest to, but if anyone wants code or instructions then email me. In combination with the attached patch, for example, this allows an sshd daemon listening internally to take normal passwords and one listening externally to require OPIE passwords. Unfortunately this means enabling PAMAuthenticationViaKbdInt, which might make the cure worse than the disease. -- Stephen White <stephen-openssh at earth.li>

Hi: I Read these security advisory. http://lab.mediaservice.net/advisory/2003-01-openssh.txt Is my FreeBSD 5.0 afected? What other versions are afected? Thanks. -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url :