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These options were used as part of Debian's response to CVE-2008-0166.
Nearly six years later, we no longer need to continue carrying the bulk
of that patch, but we do need to avoid failing when the associated
configuration options are still present.
Last-Update: 2014-02-09
Patch-Name: ssh-vulnkey-compat.patch
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This patch has been rejected upstream: "None of the OpenSSH developers are
in favour of adding this, and this situation has not changed for several
years. This is not a slight on Simon's patch, which is of fine quality, but
just that a) we don't trust GSSAPI implementations that much and b) we don't
like adding new KEX since they are pre-auth attack surface. This one is
particularly scary, since it requires hooks out to typically root-owned
system resources."
However, quite a lot of people rely on this in Debian, and it's better to
have it merged into the main openssh package rather than having separate
-krb5 packages (as we used to have). It seems to have a generally good
security history.
Bug: https://bugzilla.mindrot.org/show_bug.cgi?id=1242
Last-Updated: 2016-08-07
Patch-Name: gssapi.patch
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Add a sshd_config DisableForwaring option that disables
X11, agent, TCP, tunnel and Unix domain socket forwarding, as well as
anything else we might implement in the future.
This, like the 'restrict' authorized_keys flag, is intended to be a
simple and future-proof way of restricting an account. Suggested as
a complement to 'restrict' by Jann Horn; ok markus@
Upstream-ID: 203803f66e533a474086b38a59ceb4cf2410fcf7
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allow ClientAlive{Interval,CountMax} in Match; ok dtucker,
djm
Upstream-ID: 8beb4c1eadd588f1080b58932281983864979f55
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Validate address ranges for AllowUser/DenyUsers at
configuration load time and refuse to accept bad ones. It was previously
possible to specify invalid CIDR address ranges (e.g. djm@127.1.2.3/55) and
these would always match.
Thanks to Laurence Parry for a detailed bug report. ok markus (for
a previous diff version)
Upstream-ID: 9dfcdd9672b06e65233ea4434c38226680d40bfb
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Remove dead breaks, found via opencoverage.net. ok
deraadt@
Upstream-ID: ad9cc655829d67fad219762810770787ba913069
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restore pre-auth compression support in the client -- the
previous commit was intended to remove it from the server only.
remove a few server-side pre-auth compression bits that escaped
adjust wording of Compression directive in sshd_config(5)
pointed out by naddy@ ok markus@
Upstream-ID: d23696ed72a228dacd4839dd9f2dec424ba2016b
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Remove support for pre-authentication compression. Doing
compression early in the protocol probably seemed reasonable in the 1990s,
but today it's clearly a bad idea in terms of both cryptography (cf. multiple
compression oracle attacks in TLS) and attack surface.
Moreover, to support it across privilege-separation zlib needed
the assistance of a complex shared-memory manager that made the
required attack surface considerably larger.
Prompted by Guido Vranken pointing out a compiler-elided security
check in the shared memory manager found by Stack
(http://css.csail.mit.edu/stack/); ok deraadt@ markus@
NB. pre-auth authentication has been disabled by default in sshd
for >10 years.
Upstream-ID: 32af9771788d45a0779693b41d06ec199d849caf
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add a sIgnore opcode that silently ignores options and
use it to suppress noisy deprecation warnings for the Protocol directive.
req henning, ok markus
Upstream-ID: 9fe040aca3d6ff393f6f7e60045cdd821dc4cbe0
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remove UseLogin option and support for having /bin/login
manage login sessions; ok deraadt markus dtucker
Upstream-ID: bea7213fbf158efab7e602d9d844fba4837d2712
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Remove more SSH1 server code: * Drop sshd's -k option. *
Retire configuration keywords that only apply to protocol 1, as well as the
"protocol" keyword. * Remove some related vestiges of protocol 1 support.
ok markus@
Upstream-ID: 9402f82886de917779db12f8ee3f03d4decc244d
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fix AuthenticationMethods during configuration re-parse;
reported by Juan Francisco Cantero Hurtado
Upstream-ID: 8ffa1dac25c7577eca8238e825317ab20848f9b4
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ban AuthenticationMethods="" and accept
AuthenticationMethods=any for the default behaviour of not requiring multiple
authentication
bz#2398 from Jakub Jelen; ok dtucker@
Upstream-ID: fabd7f44d59e4518d241d0d01e226435cc23cf27
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Fix inverted logic for updating StreamLocalBindMask which
would cause the server to set an invalid mask. ok djm@
Upstream-ID: 8a4404c8307a5ef9e07ee2169fc6d8106b527587
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fix overriding of StreamLocalBindMask and
StreamLocalBindUnlink in Match blocks; found the hard way Rogan Dawes
Upstream-ID: 940bc69ec0249ab428d24ccd0722ce35cb932ee2
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don't forget to include StreamLocalBindUnlink in the
config dump output
Upstream-ID: 14a6d970b3b45c8e94272e3c661e9a0b2a0ee7cb
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fix signed/unsigned errors reported by clang-3.7; add
sshbuf_dup_string() to replace a common idiom of strdup(sshbuf_ptr()) with
better safety checking; feedback and ok markus@
Upstream-ID: 71f926d9bb3f1efed51319a6daf37e93d57c8820
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refactor canohost.c: move functions that cache results closer
to the places that use them (authn and session code). After this, no state is
cached in canohost.c
feedback and ok markus@
Upstream-ID: 5f2e4df88d4803fc8ec59ec53629105e23ce625e
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When DISABLE_LASTLOG is set, do not try to include PrintLastLog in the
config dump since it'll be reported as UNKNOWN.
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make sandboxed privilege separation the default, not just
for new installs; "absolutely" deraadt@
Upstream-ID: 5221ef3b927d2df044e9aa3f5db74ae91743f69b
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Allow RekeyLimits in excess of 4G up to 2**63 bits
(limited by the return type of scan_scaled). Part of bz#2521, ok djm.
Upstream-ID: 13bea82be566b9704821b1ea05bf7804335c7979
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Support "none" as an argument for sshd_config
ForceCommand and ChrootDirectory. Useful inside Match blocks to override a
global default. bz#2486 ok dtucker@
Upstream-ID: 7ef478d6592bc7db5c7376fc33b4443e63dccfa5
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Fix "PubkeyAcceptedKeyTypes +..." inside a Match block;
ok dtucker@
Upstream-ID: 853662c4036730b966aab77684390c47b9738c69
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bz#2278 from Brent Paulson
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Fix expansion of HostkeyAlgorithms=+...
Reported by Bryan Drewery
Upstream-ID: 70ca1deea39d758ba36d36428ae832e28566f78d
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add prohibit-password as a synonymn for without-password,
since the without-password is causing too many questions. Harden it to ban
all but pubkey, hostbased, and GSSAPI auth (when the latter is enabled) from
djm, ok markus
Upstream-ID: d53317d7b28942153e6236d3fd6e12ceb482db7a
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Allow PermitRootLogin to be overridden by config
ok markus@ deeradt@
Upstream-ID: 5cf3e26ed702888de84e2dc9d0054ccf4d9125b4
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change default: PermitRootLogin without-password matching
install script changes coming as well ok djm markus
Upstream-ID: 0e2a6c4441daf5498b47a61767382bead5eb8ea6
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Allow ssh_config and sshd_config kex parameters options be
prefixed by a '+' to indicate that the specified items be appended to the
default rather than replacing it.
approach suggested by dtucker@, feedback dlg@, ok markus@
Upstream-ID: 0f901137298fc17095d5756ff1561a7028e8882a
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Turn off DSA by default; add HostKeyAlgorithms to the
server and PubkeyAcceptedKeyTypes to the client side, so it still can be
tested or turned back on; feedback and ok djm@
Upstream-ID: 8450a9e6d83f80c9bfed864ff061dfc9323cec21
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twiddle PermitRootLogin back
Upstream-ID: 2bd23976305d0512e9f84d054e1fc23cd70b89f2
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twiddle; (this commit marks the openssh-6.9 release)
Upstream-ID: 78500582819f61dd8adee36ec5cc9b9ac9351234
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put back default PermitRootLogin=no
Upstream-ID: 7bdedd5cead99c57ed5571f3b6b7840922d5f728
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reset default PermitRootLogin to 'yes' (momentarily, for
release)
Upstream-ID: cad8513527066e65dd7a1c16363d6903e8cefa24
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add knob to relax GSSAPI host credential check for
multihomed hosts bz#928, patch by Simon Wilkinson; ok dtucker
(kerberos/GSSAPI is not compiled by default on OpenBSD)
Upstream-ID: 15ddf1c6f7fd9d98eea9962f480079ae3637285d
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add AuthorizedPrincipalsCommand that allows getting
authorized_principals from a subprocess rather than a file, which is quite
useful in deployments with large userbases
feedback and ok markus@
Upstream-ID: aa1bdac7b16fc6d2fa3524ef08f04c7258d247f6
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Remove pattern length argument from match_pattern_list(), we
only ever use it for strlen(pattern).
Prompted by hanno AT hboeck.de pointing an out-of-bound read
error caused by an incorrect pattern length found using AFL
and his own tools.
ok markus@
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a couple of parse targets were missing activep checks,
causing them to be misapplied in match context; bz#2272 diagnosis and
original patch from Sami Hartikainen ok dtucker@
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make handling of AuthorizedPrincipalsFile=none more
consistent with other =none options; bz#2288 from Jakub Jelen; ok dtucker@
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Remove pattern length argument from match_pattern_list(), we
only ever use it for strlen(pattern).
Prompted by hanno AT hboeck.de pointing an out-of-bound read
error caused by an incorrect pattern length found using AFL
and his own tools.
ok markus@
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Allow ListenAddress, Port and AddressFamily in any
order. bz#68, ok djm@, jmc@ (for the man page bit).
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Make sshd default to PermitRootLogin=no; ok deraadt@
rpe@
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rename xrealloc() to xreallocarray() since it follows
that form. ok djm
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Two small fixes for sshd -T: ListenAddress'es are added
to a list head so reverse the order when printing them to ensure the
behaviour remains the same, and print StreamLocalBindMask as octal with
leading zero. ok deraadt@
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Check for and reject missing arguments for
VersionAddendum and ForceCommand. bz#2281, patch from plautrba at redhat com,
ok djm@
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Add some missing options to sshd -T and fix the output
of VersionAddendum HostCertificate. bz#2346, patch from jjelen at redhat
com, ok djm.
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Part of bz#2346, patch from jjelen at redhat com.
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increasing encounters with difficult DNS setups in
darknets has convinced me UseDNS off by default is better ok djm
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Replace <sys/param.h> with <limits.h> and other less
dirty headers where possible. Annotate <sys/param.h> lines with their
current reasons. Switch to PATH_MAX, NGROUPS_MAX, HOST_NAME_MAX+1,
LOGIN_NAME_MAX, etc. Change MIN() and MAX() to local definitions of
MINIMUM() and MAXIMUM() where sensible to avoid pulling in the pollution.
These are the files confirmed through binary verification. ok guenther,
millert, doug (helped with the verification protocol)
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add sshd_config HostbasedAcceptedKeyTypes and
PubkeyAcceptedKeyTypes options to allow sshd to control what public key types
will be accepted. Currently defaults to all. Feedback & ok markus@
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