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1openssh (1:7.2p1-1) UNRELEASED; urgency=medium
2
3 OpenSSH 7.2 disables a number of legacy cryptographic algorithms by
4 default in ssh:
5
6 * Several ciphers blowfish-cbc, cast128-cbc, all arcfour variants and the
7 rijndael-cbc aliases for AES.
8 * MD5-based and truncated HMAC algorithms.
9
10 These algorithms are already disabled by default in sshd.
11
12 -- Colin Watson <cjwatson@debian.org> Mon, 29 Feb 2016 12:37:44 +0000
13
14openssh (1:7.1p1-2) unstable; urgency=medium
15
16 OpenSSH 7.0 disables several pieces of weak, legacy, and/or unsafe
17 cryptography.
18
19 * Support for the legacy SSH version 1 protocol is disabled by default at
20 compile time. Note that this also means that the Cipher keyword in
21 ssh_config(5) is effectively no longer usable; use Ciphers instead for
22 protocol 2. The openssh-client-ssh1 package includes "ssh1", "scp1",
23 and "ssh-keygen1" binaries which you can use if you have no alternative
24 way to connect to an outdated SSH1-only server; please contact the
25 server administrator or system vendor in such cases and ask them to
26 upgrade.
27 * Support for the 1024-bit diffie-hellman-group1-sha1 key exchange is
28 disabled by default at run-time. It may be re-enabled using the
29 instructions at http://www.openssh.com/legacy.html
30 * Support for ssh-dss, ssh-dss-cert-* host and user keys is disabled by
31 default at run-time. These may be re-enabled using the instructions at
32 http://www.openssh.com/legacy.html
33 * Support for the legacy v00 cert format has been removed.
34
35 Future releases will retire more legacy cryptography, including:
36
37 * Refusing all RSA keys smaller than 1024 bits (the current minimum is
38 768 bits).
39 * Several ciphers will be disabled by default: blowfish-cbc, cast128-cbc,
40 all arcfour variants, and the rijndael-cbc aliases for AES.
41 * MD5-based HMAC algorithms will be disabled by default.
42
43 -- Colin Watson <cjwatson@debian.org> Tue, 08 Dec 2015 15:33:08 +0000
44
45openssh (1:6.7p1-5) unstable; urgency=medium
46
47 openssh-server 1:6.7p1-4 changed the default setting of AcceptEnv to list
48 a number of specific LC_FOO variables rather than the wildcard LC_*. I
49 have since been persuaded that this was a bad idea and have reverted it,
50 but it is difficult to automatically undo the change to
51 /etc/ssh/sshd_config without compounding the problem (that of modifying
52 configuration that some users did not want to be modified) further. Most
53 users who upgraded via version 1:6.7p1-4 should restore the previous value
54 of "AcceptEnv LANG LC_*" in /etc/ssh/sshd_config.
55
56 -- Colin Watson <cjwatson@debian.org> Sun, 22 Mar 2015 23:09:32 +0000
57
58openssh (1:5.4p1-2) unstable; urgency=low
59
60 Smartcard support is now available using PKCS#11 tokens. If you were
61 previously using an unofficial build of Debian's OpenSSH package with
62 OpenSC-based smartcard support added, then note that commands like
63 'ssh-add -s 0' will no longer work; you need to use 'ssh-add -s
64 /usr/lib/opensc-pkcs11.so' instead.
65
66 -- Colin Watson <cjwatson@debian.org> Sat, 10 Apr 2010 01:08:59 +0100
67
68openssh (1:3.8.1p1-9) experimental; urgency=low
69
70 The ssh package has been split into openssh-client and openssh-server. If
71 you had previously requested that the sshd server should not be run, then
72 that request will still be honoured. However, the recommended approach is
73 now to remove the openssh-server package if you do not want to run sshd.
74 You can remove the old /etc/ssh/sshd_not_to_be_run marker file after doing
75 that.
76
77 -- Colin Watson <cjwatson@debian.org> Mon, 2 Aug 2004 20:48:54 +0100
78
79openssh (1:3.5p1-1) unstable; urgency=low
80
81 This version of OpenSSH disables the environment option for public keys by
82 default, in order to avoid certain attacks (for example, LD_PRELOAD). If
83 you are using this option in an authorized_keys file, beware that the keys
84 in question will no longer work until the option is removed.
85
86 To re-enable this option, set "PermitUserEnvironment yes" in
87 /etc/ssh/sshd_config after the upgrade is complete, taking note of the
88 warning in the sshd_config(5) manual page.
89
90 -- Colin Watson <cjwatson@debian.org> Sat, 26 Oct 2002 19:41:51 +0100
91
92openssh (1:3.0.1p1-1) unstable; urgency=high
93
94 As of version 3, OpenSSH no longer uses separate files for ssh1 and ssh2
95 keys. This means the authorized_keys2 and known_hosts2 files are no longer
96 needed. They will still be read in order to maintain backward
97 compatibility.
98
99 -- Matthew Vernon <matthew@debian.org> Thu, 28 Nov 2001 17:43:01 +0000