Antonio Larrosa
d77e0c9092
= Security
* Fix CVE-2025-26465 - ssh(1) in OpenSSH versions 6.8p1 to 9.9p1
(inclusive) contained a logic error that allowed an on-path
attacker (a.k.a MITM) to impersonate any server when the
VerifyHostKeyDNS option is enabled. This option is off by
default.
* Fix CVE-2025-26466 - sshd(8) in OpenSSH versions 9.5p1 to 9.9p1
(inclusive) is vulnerable to a memory/CPU denial-of-service
related to the handling of SSH2_MSG_PING packets. This
condition may be mitigated using the existing
PerSourcePenalties feature.
Both vulnerabilities were discovered and demonstrated to be
exploitable by the Qualys Security Advisory team. The openSSH
team thanks them for their detailed review of OpenSSH.
= Bugfixes
* ssh(1), sshd(8): fix regression in Match directive that caused
failures when predicates and their arguments were separated by
'=' characters instead of whitespace (bz3739).
* sshd(8): fix the "Match invalid-user" predicate, which was
matching incorrectly in the initial pass of config evaluation.
* ssh(1), sshd(8), ssh-keyscan(1): fix mlkem768x25519-sha256 key
exchange on big-endian systems.
* Fix a number of build problems on particular operating systems
and configurations.
- Remove patches that are already included in 9.9p2:
* 0001-fix-utmpx-ifdef.patch
* 0002-upstream-fix-regression-introduced-when-I-switched-the-Match.patch
* 0003-upstream-fix-previous-change-to-ssh_config-Match_-which-broken-on.patch
* 0004-upstream-fix-ML-KEM768x25519-KEX-on-big-endian-systems-spotted-by.patch
OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=283
There are following changes in default settings of ssh client and server: * Accepting and sending of locale environment variables in protocol 2 is enabled. * PAM authentication is enabled and mostly even required, do not turn it off. * In SLE15, root authentiation with password is enabled by default (PermitRootLogin yes). NOTE: this has security implications and is only done in order to not change behaviour of the server in an update. We strongly suggest setting this option either "prohibit-password" or even better to "no" (which disables direct remote root login entirely). * DSA authentication is enabled by default for maximum compatibility. NOTE: do not use DSA authentication since it is being phased out for a reason - the size of DSA keys is limited by the standard to 1024 bits which cannot be considered safe any more. * Accepting all RFC4419 specified DH group parameters. See KexDHMin in ssh_config and sshd_config manual pages. For more information on differences in SUSE OpenSSH package see README.FIPS