similar to: [Bug 1582] New: memory leak in do_ssh2_kex() routine (sshd.c)

Hi guys Apparently, there is small memory leak in the do_ssh2_kex() routine in sshd.c. Line 2195 in sshd.c states: myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS] = list_hostkey_types(); Where list_hostkey_types() returns a pointer allocated by the xstrdup call (line 735). This pointer should be freed in the calling routine do_ssh2_key(). Should I make a patch for this? Also, since my previous patch

Hello OpenSSH developers, openssh 4.2p1 breaks old openssh clients up to 3.4p1 when they try to use compression: # ssh-3.4p1 -C remote-host-with-4.2p1 pwd no matching comp found: client zlib server none,zlib at openssh.com option "-vv" shows ... debug2: kex_parse_kexinit: zlib ... debug2: kex_parse_kexinit: none,zlib at openssh.com ... debug2: mac_init: found hmac-md5 no

Dear all, I am currently implementing an experimental key exchange (KEX) algorithm. Unlike current algorithms like DH, mine needs to be able to fail gracefully, and in case of failure, continue with whatever algorithm would have been negotiated if mine was not selected. My strategy for graceful failure is to remove my KEX algorithm from myproposal[KEX_DEFAULT_KEX] and to initiate a new key

Suppose an SSH server has both RSA and DSA host keys for protocol 2, but I only have the DSA key, and I want to use that. I'm stuck; the OpenSSH client is hard-wired to offer both algorithms in the key exchange, and will select ssh-rsa if it's available (see myproposal.h, KEX_DEFAULT_PK_ALG). Below is a patch adding the client configuration option "PKAlgorithms" for this

https://bugzilla.mindrot.org/show_bug.cgi?id=2686 Bug ID: 2686 Summary: SSHD segfaults when trying to load RSA1 host keys Product: Portable OpenSSH Version: 7.4p1 Hardware: Other OS: Linux Status: NEW Keywords: patch Severity: enhancement Priority: P5 Component: sshd

Hi guys While debugging a GSSAPI memory allocation problem not related to OpenSSH, I found a memory leak in OpenSSH when storing forwarded GSSAPI credentials resulting in a growing process segment for each connection that uses GSSAPI credentials forwarding. What happens is the following: In the privileged parent, we are calling ssh_gssapi_storecreds() which itself calls

Hi, So I screwed up when writing the support for the curve25519 KEX method that doesn't depend on OpenSSL's BIGNUM type - a bug in my code left leading zero bytes where they should have been skipped. The impact of this is that OpenSSH 6.5 and 6.6 will fail during key exchange with a peer that implements curve25519-sha256 at libssh.org properly about 0.2% of the time (one in every 512ish

Here is a quick patch against openssh-2.5.1p1 to add a new config option (pkalg) for the ssh client allowing the selection of which public keys are obtained/verified. --cut-here- diff -c3 -r orig/openssh-2.5.1p1/key.c openssh-2.5.1p1/key.c *** orig/openssh-2.5.1p1/key.c Mon Feb 5 18:16:28 2001 --- openssh-2.5.1p1/key.c Sun Mar 11 23:10:10 2001 *************** *** 534,539 **** --- 534,567 ----

https://bugzilla.mindrot.org/show_bug.cgi?id=1601 Summary: Memory leak caused by forwarded GSSAPI credential store Product: Portable OpenSSH Version: 5.2p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: sshd AssignedTo: unassigned-bugs at

On 2020-02-05 at 20:39 -0500, Phil Pennock wrote: > On 2020-02-06 at 10:29 +1100, Damien Miller wrote: > > OpenSSH 8.2p1 is almost ready for release, so we would appreciate testing > > on as many platforms and systems as possible. This is a feature release. > > > * The RFC8332 RSA SHA-2 signature algorithms rsa-sha2-256/512. These > This actually affects me:

hello.. i am running openssh-3.7.1p2. on linux.It is working successfully..and daemon is running &client also connecting.But the problem is with the mips architecture when i connecting this server from remote syytem.?i got an error of buufer_get:trying to get more bytes 1 than buffer0.And client is not connecting from remote system.My out is as follows on my server ?in sshd main before

The attached patches fixes and cleans up the build when configured with --without-openssl. Summary: * Fix KEX_SERVER_ENCRYPT macro in myproposal.h * Fix unresolved symbols in ssh-keygen.c * Isolate openssl code and extend WITH_OPENSSL wrappers around it * Make ed25519 default key type in ssh-keygen when configured --without-openssl -------------- next part -------------- A non-text attachment was

Hi guys I've been browsing the code and at many places I found the following odd sequence: char * string=malloc(somesize); ? bzero(string,strlen(string)); free(string); I really don't see why you would zero a string and free the memory immediately afterwards? Any idea why this is done? Thanks! Met vriendelijke groet Best regards Bien ? vous Miguel SANDERS ArcelorMittal Gent UNIX

hello.. i am running openssh-3.7.1p2. on linux.It is working successfully.and daemon is running &client also connecting.But the problem is with the mips architecture when i connecting this server from remote syytem. i got an error of buufer_get:trying to get more bytes 1 than buffer0.And client is not connecting from remote system.My out is as follows on my server in sshd main before

Hi Does OpenSSH have a feature in which a client gets kicked out after X minutes of inactivity (no keystrokes)? I have seen this on other SSH implementations but I don't see it in OpenSSH. Thnx! Met vriendelijke groet Best regards Bien ? vous Miguel SANDERS ArcelorMittal Gent UNIX Systems & Storage IT Supply Western Europe | John Kennedylaan 51 B-9042 Gent T +32 9 347 3538 | F +32 9

Hi I'm currently observing a rather bizarre situation when using password based Kerberos authentication in OpenSSH on AIX. Even though AIX can authenticate a user via Kerberos (using the KRB5A load module), OpenSSH cannot Kerberos authenticate this user. This is caused by the fact that the user has two attributes which OpenSSH doesn't take into account when forming the principal name of

Hi folks Is there any particular reason why these two great features (thanks Simon!) are not part of the OpenSSH mainstream? Met vriendelijke groet Best regards Bien ? vous Miguel SANDERS ArcelorMittal Gent UNIX Systems & Storage IT Supply Western Europe | John Kennedylaan 51 B-9042 Gent T +32 9 347 3538 | F +32 9 347 4901 | M +32478 805 023 E miguel.sanders at arcelormittal.com

Hi Apparently, the server option "PrintLastLog" does not work on AIX. The last login time is always displayed, disregarding the option. When browsing the code, I found out there are several functions in loginrec.c which solely handle the processing of the last login info (login_get_lastlog, getlast_entry). Since AIX does not provide such a function natively, the configure script sets

If I am trying to build OpenSSH 6.6 with Kerberos GSSAPI support, do I still need to get Simon Wilkinson's patches? --- Scott Neugroschl | XYPRO Technology Corporation 4100 Guardian Street | Suite 100 |Simi Valley, CA 93063 | Phone 805 583-2874|Fax 805 583-0124 |

In the past 2 months another change occurred in the CVS code that broke my ssh-keyscan patch. Here's an updated version that tweaks the changed name (in the Kex struct) and also causes an attempt to grab an ssh2 key from an older server (without ssh2 support) to fail earlier and without an error message (Stuart Pearlman emailed me some code for this). This patch is based on the BSD CVS