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Sigurnosni nedostaci programskog paketa ntp

  • Detalji os-a: WN7
  • Važnost: IMP
  • Operativni sustavi: L
  • Kategorije: LSU

SUSE Security Update: Security update for ntp

Announcement ID: SUSE-SU-2016:1278-1
Rating: important
References: #957226 #977446 #977450 #977451 #977452 #977455
#977457 #977458 #977459 #977461 #977464
Cross-References: CVE-2015-7704 CVE-2015-7705 CVE-2015-7974
CVE-2016-1547 CVE-2016-1548 CVE-2016-1549
CVE-2016-1550 CVE-2016-1551 CVE-2016-2516
CVE-2016-2517 CVE-2016-2518 CVE-2016-2519

Affected Products:
SUSE Linux Enterprise Server 11-SP4
SUSE Linux Enterprise Debuginfo 11-SP4

An update that fixes 12 vulnerabilities is now available.


This update for ntp to 4.2.8p7 fixes the following issues:

* CVE-2016-1547, bsc#977459: Validate crypto-NAKs, AKA: CRYPTO-NAK DoS.
* CVE-2016-1548, bsc#977461: Interleave-pivot
* CVE-2016-1549, bsc#977451: Sybil vulnerability: ephemeral association
* CVE-2016-1550, bsc#977464: Improve NTP security against buffer
comparison timing attacks.
* CVE-2016-1551, bsc#977450: Refclock impersonation vulnerability
* CVE-2016-2516, bsc#977452: Duplicate IPs on unconfig directives will
cause an assertion botch in ntpd.
* CVE-2016-2517, bsc#977455: remote configuration trustedkey/
requestkey/controlkey values are not properly validated.
* CVE-2016-2518, bsc#977457: Crafted addpeer with hmode > 7 causes array
wraparound with MATCH_ASSOC.
* CVE-2016-2519, bsc#977458: ctl_getitem() return value not always checked.
* This update also improves the fixes for: CVE-2015-7704, CVE-2015-7705,

Bugs fixed:
– Restrict the parser in the startup script to the first
occurrance of “keys” and “controlkey” in ntp.conf (bsc#957226).

Patch Instructions:

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

– SUSE Linux Enterprise Server 11-SP4:

zypper in -t patch slessp4-ntp-12553=1

– SUSE Linux Enterprise Debuginfo 11-SP4:

zypper in -t patch dbgsp4-ntp-12553=1

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

Package List:

– SUSE Linux Enterprise Server 11-SP4 (i586 ia64 ppc64 s390x x86_64):


– SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ia64 ppc64 s390x x86_64):



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AutorMarko Stanec
Cert idNCERT-REF-2016-05-0072-ADV
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