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openssh/openssh-6.6p1-blocksigalrm.patch

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Accepting request 199679 from home:pcerny:factory - spec file cleanup (don't pointelssly build whole OpenSSH) - spec file and patch cleanup * removing obsoleted auditing patch (openssh-%{version}-audit.patch) - added patches from SLE * GSSAPI key exchange * FIPS enablement (currently disabled) * small bugfixes - split the LDAP helper into a separate package: openssh-akc-ldap OBS-URL: https://build.opensuse.org/request/show/199679 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=55
2013-09-19 06:09:33 +02:00
# block SIGALRM while logging through syslog to prevent deadlocks (through
# grace_alarm_handler)
# bnc#57354
Accepting request 230097 from home:pcerny:factory - Update of the underlying OpenSSH to 6.6p1 - update to 6.6p1 Security: * sshd(8): when using environment passing with a sshd_config(5) AcceptEnv pattern with a wildcard. OpenSSH prior to 6.6 could be tricked into accepting any enviornment variable that contains the characters before the wildcard character. Features since 6.5p1: * ssh(1), sshd(8): removal of the J-PAKE authentication code, which was experimental, never enabled and has been unmaintained for some time. * ssh(1): skip 'exec' clauses other clauses predicates failed to match while processing Match blocks. * ssh(1): if hostname canonicalisation is enabled and results in the destination hostname being changed, then re-parse ssh_config(5) files using the new destination hostname. This gives 'Host' and 'Match' directives that use the expanded hostname a chance to be applied. Bugfixes: * ssh(1): avoid spurious "getsockname failed: Bad file descriptor" in ssh -W. bz#2200, debian#738692 * sshd(8): allow the shutdown(2) syscall in seccomp-bpf and systrace sandbox modes, as it is reachable if the connection is terminated during the pre-auth phase. * ssh(1), sshd(8): fix unsigned overflow that in SSH protocol 1 bignum parsing. Minimum key length checks render this bug unexploitable to compromise SSH 1 sessions. * sshd_config(5): clarify behaviour of a keyword that appears in multiple matching Match blocks. bz#2184 OBS-URL: https://build.opensuse.org/request/show/230097 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=76
2014-04-14 23:53:01 +02:00
diff --git a/openssh-6.6p1/log.c b/openssh-6.6p1/log.c
--- a/openssh-6.6p1/log.c
+++ b/openssh-6.6p1/log.c
Accepting request 220466 from home:pcerny:factory - Update of the underlying OpenSSH to 6.4p1 - Update to 6.4p1 Features since 6.2p2: * ssh-agent(1) support in sshd(8); allows encrypted hostkeys, or hostkeys on smartcards. * ssh(1)/sshd(8): allow optional time-based rekeying via a second argument to the existing RekeyLimit option. RekeyLimit is now supported in sshd_config as well as on the client. * sshd(8): standardise logging of information during user authentication. * The presented key/cert and the remote username (if available) is now logged in the authentication success/failure message on the same log line as the local username, remote host/port and protocol in use. Certificates contents and the key fingerprint of the signing CA are logged too. * ssh(1) ability to query what cryptographic algorithms are supported in the binary. * ssh(1): ProxyCommand=- for cases where stdin and stdout already point to the proxy. * ssh(1): allow IdentityFile=none * ssh(1)/sshd(8): -E option to append debugging logs to a specified file instead of stderr or syslog. * sftp(1): support resuming partial downloads with the "reget" command and on the sftp commandline or on the "get" commandline with the "-a" (append) option. * ssh(1): "IgnoreUnknown" configuration option to selectively suppress errors arising from unknown configuration directives. * sshd(8): support for submethods to be appended to required authentication methods listed via AuthenticationMethods. OBS-URL: https://build.opensuse.org/request/show/220466 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=58
2014-01-31 13:18:41 +01:00
@@ -47,16 +47,17 @@
Accepting request 199679 from home:pcerny:factory - spec file cleanup (don't pointelssly build whole OpenSSH) - spec file and patch cleanup * removing obsoleted auditing patch (openssh-%{version}-audit.patch) - added patches from SLE * GSSAPI key exchange * FIPS enablement (currently disabled) * small bugfixes - split the LDAP helper into a separate package: openssh-akc-ldap OBS-URL: https://build.opensuse.org/request/show/199679 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=55
2013-09-19 06:09:33 +02:00
#include <unistd.h>
#include <errno.h>
#if defined(HAVE_STRNVIS) && defined(HAVE_VIS_H) && !defined(BROKEN_STRNVIS)
# include <vis.h>
#endif
#include "xmalloc.h"
#include "log.h"
+#include <signal.h>
static LogLevel log_level = SYSLOG_LEVEL_INFO;
static int log_on_stderr = 1;
Accepting request 220466 from home:pcerny:factory - Update of the underlying OpenSSH to 6.4p1 - Update to 6.4p1 Features since 6.2p2: * ssh-agent(1) support in sshd(8); allows encrypted hostkeys, or hostkeys on smartcards. * ssh(1)/sshd(8): allow optional time-based rekeying via a second argument to the existing RekeyLimit option. RekeyLimit is now supported in sshd_config as well as on the client. * sshd(8): standardise logging of information during user authentication. * The presented key/cert and the remote username (if available) is now logged in the authentication success/failure message on the same log line as the local username, remote host/port and protocol in use. Certificates contents and the key fingerprint of the signing CA are logged too. * ssh(1) ability to query what cryptographic algorithms are supported in the binary. * ssh(1): ProxyCommand=- for cases where stdin and stdout already point to the proxy. * ssh(1): allow IdentityFile=none * ssh(1)/sshd(8): -E option to append debugging logs to a specified file instead of stderr or syslog. * sftp(1): support resuming partial downloads with the "reget" command and on the sftp commandline or on the "get" commandline with the "-a" (append) option. * ssh(1): "IgnoreUnknown" configuration option to selectively suppress errors arising from unknown configuration directives. * sshd(8): support for submethods to be appended to required authentication methods listed via AuthenticationMethods. OBS-URL: https://build.opensuse.org/request/show/220466 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=58
2014-01-31 13:18:41 +01:00
static int log_stderr_fd = STDERR_FILENO;
Accepting request 199679 from home:pcerny:factory - spec file cleanup (don't pointelssly build whole OpenSSH) - spec file and patch cleanup * removing obsoleted auditing patch (openssh-%{version}-audit.patch) - added patches from SLE * GSSAPI key exchange * FIPS enablement (currently disabled) * small bugfixes - split the LDAP helper into a separate package: openssh-akc-ldap OBS-URL: https://build.opensuse.org/request/show/199679 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=55
2013-09-19 06:09:33 +02:00
static int log_facility = LOG_AUTH;
static char *argv0;
static log_handler_fn *log_handler;
static void *log_handler_ctx;
Accepting request 220466 from home:pcerny:factory - Update of the underlying OpenSSH to 6.4p1 - Update to 6.4p1 Features since 6.2p2: * ssh-agent(1) support in sshd(8); allows encrypted hostkeys, or hostkeys on smartcards. * ssh(1)/sshd(8): allow optional time-based rekeying via a second argument to the existing RekeyLimit option. RekeyLimit is now supported in sshd_config as well as on the client. * sshd(8): standardise logging of information during user authentication. * The presented key/cert and the remote username (if available) is now logged in the authentication success/failure message on the same log line as the local username, remote host/port and protocol in use. Certificates contents and the key fingerprint of the signing CA are logged too. * ssh(1) ability to query what cryptographic algorithms are supported in the binary. * ssh(1): ProxyCommand=- for cases where stdin and stdout already point to the proxy. * ssh(1): allow IdentityFile=none * ssh(1)/sshd(8): -E option to append debugging logs to a specified file instead of stderr or syslog. * sftp(1): support resuming partial downloads with the "reget" command and on the sftp commandline or on the "get" commandline with the "-a" (append) option. * ssh(1): "IgnoreUnknown" configuration option to selectively suppress errors arising from unknown configuration directives. * sshd(8): support for submethods to be appended to required authentication methods listed via AuthenticationMethods. OBS-URL: https://build.opensuse.org/request/show/220466 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=58
2014-01-31 13:18:41 +01:00
@@ -384,16 +385,17 @@ do_log(LogLevel level, const char *fmt,
Accepting request 199679 from home:pcerny:factory - spec file cleanup (don't pointelssly build whole OpenSSH) - spec file and patch cleanup * removing obsoleted auditing patch (openssh-%{version}-audit.patch) - added patches from SLE * GSSAPI key exchange * FIPS enablement (currently disabled) * small bugfixes - split the LDAP helper into a separate package: openssh-akc-ldap OBS-URL: https://build.opensuse.org/request/show/199679 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=55
2013-09-19 06:09:33 +02:00
{
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
struct syslog_data sdata = SYSLOG_DATA_INIT;
#endif
char msgbuf[MSGBUFSIZ];
char fmtbuf[MSGBUFSIZ];
char *txt = NULL;
int pri = LOG_INFO;
+ sigset_t nset, oset;
int saved_errno = errno;
log_handler_fn *tmp_handler;
if (level > log_level)
return;
switch (level) {
case SYSLOG_LEVEL_FATAL:
Accepting request 220466 from home:pcerny:factory - Update of the underlying OpenSSH to 6.4p1 - Update to 6.4p1 Features since 6.2p2: * ssh-agent(1) support in sshd(8); allows encrypted hostkeys, or hostkeys on smartcards. * ssh(1)/sshd(8): allow optional time-based rekeying via a second argument to the existing RekeyLimit option. RekeyLimit is now supported in sshd_config as well as on the client. * sshd(8): standardise logging of information during user authentication. * The presented key/cert and the remote username (if available) is now logged in the authentication success/failure message on the same log line as the local username, remote host/port and protocol in use. Certificates contents and the key fingerprint of the signing CA are logged too. * ssh(1) ability to query what cryptographic algorithms are supported in the binary. * ssh(1): ProxyCommand=- for cases where stdin and stdout already point to the proxy. * ssh(1): allow IdentityFile=none * ssh(1)/sshd(8): -E option to append debugging logs to a specified file instead of stderr or syslog. * sftp(1): support resuming partial downloads with the "reget" command and on the sftp commandline or on the "get" commandline with the "-a" (append) option. * ssh(1): "IgnoreUnknown" configuration option to selectively suppress errors arising from unknown configuration directives. * sshd(8): support for submethods to be appended to required authentication methods listed via AuthenticationMethods. OBS-URL: https://build.opensuse.org/request/show/220466 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=58
2014-01-31 13:18:41 +01:00
@@ -442,20 +444,29 @@ do_log(LogLevel level, const char *fmt,
Accepting request 199679 from home:pcerny:factory - spec file cleanup (don't pointelssly build whole OpenSSH) - spec file and patch cleanup * removing obsoleted auditing patch (openssh-%{version}-audit.patch) - added patches from SLE * GSSAPI key exchange * FIPS enablement (currently disabled) * small bugfixes - split the LDAP helper into a separate package: openssh-akc-ldap OBS-URL: https://build.opensuse.org/request/show/199679 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=55
2013-09-19 06:09:33 +02:00
tmp_handler = log_handler;
log_handler = NULL;
tmp_handler(level, fmtbuf, log_handler_ctx);
log_handler = tmp_handler;
} else if (log_on_stderr) {
snprintf(msgbuf, sizeof msgbuf, "%s\r\n", fmtbuf);
Accepting request 220466 from home:pcerny:factory - Update of the underlying OpenSSH to 6.4p1 - Update to 6.4p1 Features since 6.2p2: * ssh-agent(1) support in sshd(8); allows encrypted hostkeys, or hostkeys on smartcards. * ssh(1)/sshd(8): allow optional time-based rekeying via a second argument to the existing RekeyLimit option. RekeyLimit is now supported in sshd_config as well as on the client. * sshd(8): standardise logging of information during user authentication. * The presented key/cert and the remote username (if available) is now logged in the authentication success/failure message on the same log line as the local username, remote host/port and protocol in use. Certificates contents and the key fingerprint of the signing CA are logged too. * ssh(1) ability to query what cryptographic algorithms are supported in the binary. * ssh(1): ProxyCommand=- for cases where stdin and stdout already point to the proxy. * ssh(1): allow IdentityFile=none * ssh(1)/sshd(8): -E option to append debugging logs to a specified file instead of stderr or syslog. * sftp(1): support resuming partial downloads with the "reget" command and on the sftp commandline or on the "get" commandline with the "-a" (append) option. * ssh(1): "IgnoreUnknown" configuration option to selectively suppress errors arising from unknown configuration directives. * sshd(8): support for submethods to be appended to required authentication methods listed via AuthenticationMethods. OBS-URL: https://build.opensuse.org/request/show/220466 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=58
2014-01-31 13:18:41 +01:00
(void)write(log_stderr_fd, msgbuf, strlen(msgbuf));
Accepting request 199679 from home:pcerny:factory - spec file cleanup (don't pointelssly build whole OpenSSH) - spec file and patch cleanup * removing obsoleted auditing patch (openssh-%{version}-audit.patch) - added patches from SLE * GSSAPI key exchange * FIPS enablement (currently disabled) * small bugfixes - split the LDAP helper into a separate package: openssh-akc-ldap OBS-URL: https://build.opensuse.org/request/show/199679 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=55
2013-09-19 06:09:33 +02:00
} else {
+ /* Prevent a race between the grace_alarm
+ * which writes a log message and terminates
+ * and main sshd code that leads to deadlock
+ * as syslog is not async safe.
+ */
+ sigemptyset(&nset);
+ sigaddset(&nset, SIGALRM);
+ sigprocmask(SIG_BLOCK, &nset, &oset);
#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT)
openlog_r(argv0 ? argv0 : __progname, LOG_PID, log_facility, &sdata);
syslog_r(pri, &sdata, "%.500s", fmtbuf);
closelog_r(&sdata);
#else
openlog(argv0 ? argv0 : __progname, LOG_PID, log_facility);
syslog(pri, "%.500s", fmtbuf);
closelog();
#endif
+ sigprocmask(SIG_SETMASK, &oset, NULL);
}
errno = saved_errno;
}
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