diff options
author | Colin Watson <cjwatson@debian.org> | 2014-10-07 13:33:15 +0100 |
---|---|---|
committer | Colin Watson <cjwatson@debian.org> | 2014-10-07 14:27:30 +0100 |
commit | f0b009aea83e9ff3a50be30f51012099a5143c16 (patch) | |
tree | 3825e6f7e3b7ea4481d06ed89aba9a7a95150df5 /INSTALL | |
parent | 47f0bad4330b16ec3bad870fcf9839c196e42c12 (diff) | |
parent | 762c062828f5a8f6ed189ed6e44ad38fd92f8b36 (diff) |
Merge 6.7p1.
* New upstream release (http://www.openssh.com/txt/release-6.7):
- sshd(8): The default set of ciphers and MACs has been altered to
remove unsafe algorithms. In particular, CBC ciphers and arcfour* are
disabled by default. The full set of algorithms remains available if
configured explicitly via the Ciphers and MACs sshd_config options.
- ssh(1), sshd(8): Add support for Unix domain socket forwarding. A
remote TCP port may be forwarded to a local Unix domain socket and
vice versa or both ends may be a Unix domain socket (closes: #236718).
- ssh(1), ssh-keygen(1): Add support for SSHFP DNS records for ED25519
key types.
- sftp(1): Allow resumption of interrupted uploads.
- ssh(1): When rekeying, skip file/DNS lookups of the hostkey if it is
the same as the one sent during initial key exchange.
- sshd(8): Allow explicit ::1 and 127.0.0.1 forwarding bind addresses
when GatewayPorts=no; allows client to choose address family.
- sshd(8): Add a sshd_config PermitUserRC option to control whether
~/.ssh/rc is executed, mirroring the no-user-rc authorized_keys
option.
- ssh(1): Add a %C escape sequence for LocalCommand and ControlPath that
expands to a unique identifer based on a hash of the tuple of (local
host, remote user, hostname, port). Helps avoid exceeding miserly
pathname limits for Unix domain sockets in multiplexing control paths.
- sshd(8): Make the "Too many authentication failures" message include
the user, source address, port and protocol in a format similar to the
authentication success / failure messages.
- Use CLOCK_BOOTTIME in preference to CLOCK_MONOTONIC when it is
available. It considers time spent suspended, thereby ensuring
timeouts (e.g. for expiring agent keys) fire correctly (closes:
#734553).
- Use prctl() to prevent sftp-server from accessing
/proc/self/{mem,maps}.
* Restore TCP wrappers support, removed upstream in 6.7. It is true that
dropping this reduces preauth attack surface in sshd. On the other
hand, this support seems to be quite widely used, and abruptly dropping
it (from the perspective of users who don't read openssh-unix-dev) could
easily cause more serious problems in practice. It's not entirely clear
what the right long-term answer for Debian is, but it at least probably
doesn't involve dropping this feature shortly before a freeze.
* Replace patch to disable OpenSSL version check with an updated version
of Kurt Roeckx's patch from #732940 to just avoid checking the status
field.
Diffstat (limited to 'INSTALL')
-rw-r--r-- | INSTALL | 43 |
1 files changed, 18 insertions, 25 deletions
@@ -1,22 +1,26 @@ | |||
1 | 1. Prerequisites | 1 | 1. Prerequisites |
2 | ---------------- | 2 | ---------------- |
3 | 3 | ||
4 | You will need working installations of Zlib and OpenSSL. | 4 | You will need working installations of Zlib and libcrypto (LibreSSL / |
5 | OpenSSL) | ||
5 | 6 | ||
6 | Zlib 1.1.4 or 1.2.1.2 or greater (ealier 1.2.x versions have problems): | 7 | Zlib 1.1.4 or 1.2.1.2 or greater (ealier 1.2.x versions have problems): |
7 | http://www.gzip.org/zlib/ | 8 | http://www.gzip.org/zlib/ |
8 | 9 | ||
9 | OpenSSL 0.9.6 or greater: | 10 | libcrypto (LibreSSL or OpenSSL >= 0.9.8f) |
10 | http://www.openssl.org/ | 11 | LibreSSL http://www.libressl.org/ ; or |
12 | OpenSSL http://www.openssl.org/ | ||
11 | 13 | ||
12 | (OpenSSL 0.9.5a is partially supported, but some ciphers (SSH protocol 1 | 14 | LibreSSL/OpenSSL should be compiled as a position-independent library |
13 | Blowfish) do not work correctly.) | 15 | (i.e. with -fPIC) otherwise OpenSSH will not be able to link with it. |
16 | If you must use a non-position-independent libcrypto, then you may need | ||
17 | to configure OpenSSH --without-pie. | ||
14 | 18 | ||
15 | The remaining items are optional. | 19 | The remaining items are optional. |
16 | 20 | ||
17 | NB. If you operating system supports /dev/random, you should configure | 21 | NB. If you operating system supports /dev/random, you should configure |
18 | OpenSSL to use it. OpenSSH relies on OpenSSL's direct support of | 22 | libcrypto (LibreSSL/OpenSSL) to use it. OpenSSH relies on libcrypto's |
19 | /dev/random, or failing that, either prngd or egd | 23 | direct support of /dev/random, or failing that, either prngd or egd |
20 | 24 | ||
21 | PRNGD: | 25 | PRNGD: |
22 | 26 | ||
@@ -27,10 +31,10 @@ http://prngd.sourceforge.net/ | |||
27 | 31 | ||
28 | EGD: | 32 | EGD: |
29 | 33 | ||
30 | The Entropy Gathering Daemon (EGD) is supported if you have a system which | 34 | If the kernel lacks /dev/random the Entropy Gathering Daemon (EGD) is |
31 | lacks /dev/random and don't want to use OpenSSH's internal entropy collection. | 35 | supported only if libcrypto supports it. |
32 | 36 | ||
33 | http://www.lothar.com/tech/crypto/ | 37 | http://egd.sourceforge.net/ |
34 | 38 | ||
35 | PAM: | 39 | PAM: |
36 | 40 | ||
@@ -55,15 +59,6 @@ passphrase requester. This is maintained separately at: | |||
55 | 59 | ||
56 | http://www.jmknoble.net/software/x11-ssh-askpass/ | 60 | http://www.jmknoble.net/software/x11-ssh-askpass/ |
57 | 61 | ||
58 | TCP Wrappers: | ||
59 | |||
60 | If you wish to use the TCP wrappers functionality you will need at least | ||
61 | tcpd.h and libwrap.a, either in the standard include and library paths, | ||
62 | or in the directory specified by --with-tcp-wrappers. Version 7.6 is | ||
63 | known to work. | ||
64 | |||
65 | http://ftp.porcupine.org/pub/security/index.html | ||
66 | |||
67 | S/Key Libraries: | 62 | S/Key Libraries: |
68 | 63 | ||
69 | If you wish to use --with-skey then you will need the library below | 64 | If you wish to use --with-skey then you will need the library below |
@@ -180,9 +175,6 @@ Integration Architecture. The default for OSF1 machines is enable. | |||
180 | --with-skey=PATH will enable S/Key one time password support. You will | 175 | --with-skey=PATH will enable S/Key one time password support. You will |
181 | need the S/Key libraries and header files installed for this to work. | 176 | need the S/Key libraries and header files installed for this to work. |
182 | 177 | ||
183 | --with-tcp-wrappers will enable TCP Wrappers (/etc/hosts.allow|deny) | ||
184 | support. | ||
185 | |||
186 | --with-md5-passwords will enable the use of MD5 passwords. Enable this | 178 | --with-md5-passwords will enable the use of MD5 passwords. Enable this |
187 | if your operating system uses MD5 passwords and the system crypt() does | 179 | if your operating system uses MD5 passwords and the system crypt() does |
188 | not support them directly (see the crypt(3/3c) man page). If enabled, the | 180 | not support them directly (see the crypt(3/3c) man page). If enabled, the |
@@ -204,10 +196,11 @@ created. | |||
204 | 196 | ||
205 | --with-xauth=PATH specifies the location of the xauth binary | 197 | --with-xauth=PATH specifies the location of the xauth binary |
206 | 198 | ||
207 | --with-ssl-dir=DIR allows you to specify where your OpenSSL libraries | 199 | --with-ssl-dir=DIR allows you to specify where your Libre/OpenSSL |
200 | libraries | ||
208 | are installed. | 201 | are installed. |
209 | 202 | ||
210 | --with-ssl-engine enables OpenSSL's (hardware) ENGINE support | 203 | --with-ssl-engine enables Libre/OpenSSL's (hardware) ENGINE support |
211 | 204 | ||
212 | --with-4in6 Check for IPv4 in IPv6 mapped addresses and convert them to | 205 | --with-4in6 Check for IPv4 in IPv6 mapped addresses and convert them to |
213 | real (AF_INET) IPv4 addresses. Works around some quirks on Linux. | 206 | real (AF_INET) IPv4 addresses. Works around some quirks on Linux. |
@@ -266,4 +259,4 @@ Please refer to the "reporting bugs" section of the webpage at | |||
266 | http://www.openssh.com/ | 259 | http://www.openssh.com/ |
267 | 260 | ||
268 | 261 | ||
269 | $Id: INSTALL,v 1.88 2013/03/07 01:33:35 dtucker Exp $ | 262 | $Id: INSTALL,v 1.91 2014/09/09 02:23:11 dtucker Exp $ |