Sicherheit: Mehrere Probleme in NTP

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SUSE Security Update: Security update for ntp
______________________________________________________________________________

Announcement ID: SUSE-SU-2016:1311-1
Rating: important
References: #782060 #784760 #905885 #910063 #916617 #920183
#920238 #926510 #936327 #937837 #942441 #942587
#943216 #943218 #944300 #946386 #951351 #951559
#951608 #951629 #954982 #956773 #962318 #962784
#962802 #962960 #962966 #962970 #962988 #962994
#962995 #962997 #963000 #963002 #975496 #975981

Cross-References: CVE-2015-5194 CVE-2015-5219 CVE-2015-5300
CVE-2015-7691 CVE-2015-7692 CVE-2015-7701
CVE-2015-7702 CVE-2015-7703 CVE-2015-7704
CVE-2015-7705 CVE-2015-7848 CVE-2015-7849
CVE-2015-7850 CVE-2015-7851 CVE-2015-7852
CVE-2015-7853 CVE-2015-7854 CVE-2015-7855
CVE-2015-7871 CVE-2015-7973 CVE-2015-7974
CVE-2015-7975 CVE-2015-7976 CVE-2015-7977
CVE-2015-7978 CVE-2015-7979 CVE-2015-8138
CVE-2015-8139 CVE-2015-8140 CVE-2015-8158

Affected Products:
SUSE OpenStack Cloud 5
SUSE Manager Proxy 2.1
SUSE Manager 2.1
SUSE Linux Enterprise Server 11-SP3-LTSS
SUSE Linux Enterprise Server 11-SP2-LTSS
SUSE Linux Enterprise Debuginfo 11-SP3
SUSE Linux Enterprise Debuginfo 11-SP2
______________________________________________________________________________

An update that solves 30 vulnerabilities and has 6 fixes is
now available.

Description:

This network time protocol server ntp was updated to 4.2.8p6 to fix the
following issues:

Also yast2-ntp-client was updated to match some sntp syntax changes.
(bsc#937837)

Major functional changes:
- The "sntp" commandline tool changed its option handling in a major
way.
- "controlkey 1" is added during update to ntp.conf to allow sntp to
work.
- The local clock is being disabled during update.
- ntpd is no longer running chrooted.

Other functional changes:
- ntp-signd is installed.
- "enable mode7" can be added to the configuration to allow ntdpc to
work
as compatibility mode option.
- "kod" was removed from the default restrictions.
- SHA1 keys are used by default instead of MD5 keys.

These security issues were fixed:
- CVE-2015-5219: An endless loop due to incorrect precision to double
conversion (bsc#943216).
- CVE-2015-8158: Fixed potential infinite loop in ntpq (bsc#962966).
- CVE-2015-8138: Zero Origin Timestamp Bypass (bsc#963002).
- CVE-2015-7979: Off-path Denial of Service (DoS) attack on authenticated
broadcast mode (bsc#962784).
- CVE-2015-7978: Stack exhaustion in recursive traversal of restriction
list (bsc#963000).
- CVE-2015-7977: reslist NULL pointer dereference (bsc#962970).
- CVE-2015-7976: ntpq saveconfig command allows dangerous characters in
filenames (bsc#962802).
- CVE-2015-7975: nextvar() missing length check (bsc#962988).
- CVE-2015-7974: Skeleton Key: Missing key check allows impersonation
between authenticated peers (bsc#962960).
- CVE-2015-7973: Replay attack on authenticated broadcast mode
(bsc#962995).
- CVE-2015-8140: ntpq vulnerable to replay attacks (bsc#962994).
- CVE-2015-8139: Origin Leak: ntpq and ntpdc, disclose origin (bsc#962997).
- CVE-2015-5300: MITM attacker could have forced ntpd to make a step
larger than the panic threshold (bsc#951629).
- CVE-2015-7871: NAK to the Future: Symmetric association authentication
bypass via crypto-NAK (bsc#951608).
- CVE-2015-7855: decodenetnum() will ASSERT botch instead of returning
FAIL on some bogus values (bsc#951608).
- CVE-2015-7854: Password Length Memory Corruption Vulnerability
(bsc#951608).
- CVE-2015-7853: Invalid length data provided by a custom refclock driver
could cause a buffer overflow (bsc#951608).
- CVE-2015-7852: ntpq atoascii() Memory Corruption Vulnerability
(bsc#951608).
- CVE-2015-7851: saveconfig Directory Traversal Vulnerability (bsc#951608).
- CVE-2015-7850: remote config logfile-keyfile (bsc#951608).
- CVE-2015-7849: trusted key use-after-free (bsc#951608).
- CVE-2015-7848: mode 7 loop counter underrun (bsc#951608).
- CVE-2015-7701: Slow memory leak in CRYPTO_ASSOC (bsc#951608).
- CVE-2015-7703: configuration directives "pidfile" and
"driftfile" should
only be allowed locally (bsc#951608).
- CVE-2015-7704, CVE-2015-7705: Clients that receive a KoD should validate
the origin timestamp field (bsc#951608).
- CVE-2015-7691, CVE-2015-7692, CVE-2015-7702: Incomplete autokey data
packet length checks (bsc#951608).

These non-security issues were fixed:
- fate#320758 bsc#975981: Enable compile-time support for MS-SNTP
(--enable-ntp-signd). This replaces the w32 patches in 4.2.4 that added
the authreg directive.
- bsc#962318: Call /usr/sbin/sntp with full path to synchronize in
start-ntpd. When run as cron job, /usr/sbin/ is not in the path, which
caused the synchronization to fail.
- bsc#782060: Speedup ntpq.
- bsc#916617: Add /var/db/ntp-kod.
- bsc#956773: Add ntp-ENOBUFS.patch to limit a warning that might happen
quite a lot on loaded systems.
- bsc#951559,bsc#975496: Fix the TZ offset output of sntp during DST.
- Add ntp-fork.patch and build with threads disabled to allow name
resolution even when running chrooted.
- Add a controlkey line to /etc/ntp.conf if one does not already exist to
allow runtime configuuration via ntpq.
- bsc#946386: Temporarily disable memlock to avoid problems due to high
memory usage during name resolution.
- bsc#905885: Use SHA1 instead of MD5 for symmetric keys.
- Improve runtime configuration:
* Read keytype from ntp.conf
* Don't write ntp keys to syslog.
- Fix legacy action scripts to pass on command line arguments.
- bsc#944300: Remove "kod" from the restrict line in ntp.conf.
- bsc#936327: Use ntpq instead of deprecated ntpdc in start-ntpd.
- Don't let "keysdir" lines in ntp.conf trigger the
"keys" parser.
- Disable mode 7 (ntpdc) again, now that we don't use it anymore.
- Add "addserver" as a new legacy action.
- bsc#910063: Fix the comment regarding addserver in ntp.conf.
- bsc#926510: Disable chroot by default.
- bsc#920238: Enable ntpdc for backwards compatibility.
- bsc#784760: Remove local clock from default configuration.
- bsc#942441/fate#319496: Require perl-Socket6.
- Improve runtime configuration:
* Read keytype from ntp.conf
* Don't write ntp keys to syslog.
- bsc#920183: Allow -4 and -6 address qualifiers in "server"
directives.
- Use upstream ntp-wait, because our version is incompatible with the new
ntpq command line syntax.

Patch Instructions:

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

- SUSE OpenStack Cloud 5:

zypper in -t patch sleclo50sp3-ntp-12561=1

- SUSE Manager Proxy 2.1:

zypper in -t patch slemap21-ntp-12561=1

- SUSE Manager 2.1:

zypper in -t patch sleman21-ntp-12561=1

- SUSE Linux Enterprise Server 11-SP3-LTSS:

zypper in -t patch slessp3-ntp-12561=1

- SUSE Linux Enterprise Server 11-SP2-LTSS:

zypper in -t patch slessp2-ntp-12561=1

- SUSE Linux Enterprise Debuginfo 11-SP3:

zypper in -t patch dbgsp3-ntp-12561=1

- SUSE Linux Enterprise Debuginfo 11-SP2:

zypper in -t patch dbgsp2-ntp-12561=1

To bring your system up-to-date, use "zypper patch".

Package List:

- SUSE OpenStack Cloud 5 (x86_64):

ntp-4.2.8p6-41.1
ntp-doc-4.2.8p6-41.1

- SUSE Manager Proxy 2.1 (x86_64):

ntp-4.2.8p6-41.1
ntp-doc-4.2.8p6-41.1

- SUSE Manager 2.1 (s390x x86_64):

ntp-4.2.8p6-41.1
ntp-doc-4.2.8p6-41.1

- SUSE Linux Enterprise Server 11-SP3-LTSS (i586 s390x x86_64):

ntp-4.2.8p6-41.1
ntp-doc-4.2.8p6-41.1

- SUSE Linux Enterprise Server 11-SP2-LTSS (i586 s390x x86_64):

ntp-4.2.8p6-41.1
ntp-doc-4.2.8p6-41.1

- SUSE Linux Enterprise Server 11-SP2-LTSS (noarch):

yast2-ntp-client-2.17.14.1-1.12.1

- SUSE Linux Enterprise Debuginfo 11-SP3 (i586 s390x x86_64):

ntp-debuginfo-4.2.8p6-41.1
ntp-debugsource-4.2.8p6-41.1

- SUSE Linux Enterprise Debuginfo 11-SP2 (i586 s390x x86_64):

ntp-debuginfo-4.2.8p6-41.1
ntp-debugsource-4.2.8p6-41.1

References:

https://www.suse.com/security/cve/CVE-2015-5194.html
https://www.suse.com/security/cve/CVE-2015-5219.html
https://www.suse.com/security/cve/CVE-2015-5300.html
https://www.suse.com/security/cve/CVE-2015-7691.html
https://www.suse.com/security/cve/CVE-2015-7692.html
https://www.suse.com/security/cve/CVE-2015-7701.html
https://www.suse.com/security/cve/CVE-2015-7702.html
https://www.suse.com/security/cve/CVE-2015-7703.html
https://www.suse.com/security/cve/CVE-2015-7704.html
https://www.suse.com/security/cve/CVE-2015-7705.html
https://www.suse.com/security/cve/CVE-2015-7848.html
https://www.suse.com/security/cve/CVE-2015-7849.html
https://www.suse.com/security/cve/CVE-2015-7850.html
https://www.suse.com/security/cve/CVE-2015-7851.html
https://www.suse.com/security/cve/CVE-2015-7852.html
https://www.suse.com/security/cve/CVE-2015-7853.html
https://www.suse.com/security/cve/CVE-2015-7854.html
https://www.suse.com/security/cve/CVE-2015-7855.html
https://www.suse.com/security/cve/CVE-2015-7871.html
https://www.suse.com/security/cve/CVE-2015-7973.html
https://www.suse.com/security/cve/CVE-2015-7974.html
https://www.suse.com/security/cve/CVE-2015-7975.html
https://www.suse.com/security/cve/CVE-2015-7976.html
https://www.suse.com/security/cve/CVE-2015-7977.html
https://www.suse.com/security/cve/CVE-2015-7978.html
https://www.suse.com/security/cve/CVE-2015-7979.html
https://www.suse.com/security/cve/CVE-2015-8138.html
https://www.suse.com/security/cve/CVE-2015-8139.html
https://www.suse.com/security/cve/CVE-2015-8140.html
https://www.suse.com/security/cve/CVE-2015-8158.html
https://bugzilla.suse.com/782060
https://bugzilla.suse.com/784760
https://bugzilla.suse.com/905885
https://bugzilla.suse.com/910063
https://bugzilla.suse.com/916617
https://bugzilla.suse.com/920183
https://bugzilla.suse.com/920238
https://bugzilla.suse.com/926510
https://bugzilla.suse.com/936327
https://bugzilla.suse.com/937837
https://bugzilla.suse.com/942441
https://bugzilla.suse.com/942587
https://bugzilla.suse.com/943216
https://bugzilla.suse.com/943218
https://bugzilla.suse.com/944300
https://bugzilla.suse.com/946386
https://bugzilla.suse.com/951351
https://bugzilla.suse.com/951559
https://bugzilla.suse.com/951608
https://bugzilla.suse.com/951629
https://bugzilla.suse.com/954982
https://bugzilla.suse.com/956773
https://bugzilla.suse.com/962318
https://bugzilla.suse.com/962784
https://bugzilla.suse.com/962802
https://bugzilla.suse.com/962960
https://bugzilla.suse.com/962966
https://bugzilla.suse.com/962970
https://bugzilla.suse.com/962988
https://bugzilla.suse.com/962994
https://bugzilla.suse.com/962995
https://bugzilla.suse.com/962997
https://bugzilla.suse.com/963000
https://bugzilla.suse.com/963002
https://bugzilla.suse.com/975496
https://bugzilla.suse.com/975981

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