CVE-2016-4957

Home/CVE/ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet.

CVE

ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet.

ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.

HIGH · CVSS 7.5 EPSS 0.53716

Act now

EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
EPSS percentile: top 2% of all CVEs by exploitation likelihood
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

⬡

Weakness Classification

CWE-476NULL Pointer Dereference

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Affected Products & Versions

ntpall versions
oracle solarisall versions
suse manager proxyall versions
suse openstack cloudall versions
novell suse managerall versions
opensuse leapall versions
opensuseall versions
suse linux enterprise desktopall versions
Show all 9 affected productssuse linux enterprise serverall versions

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Scoring & Timeline

7.5

HIGH · CVSS v3.1 · cve@mitre.org

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD05 Jul 2016 · 01:59 AM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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Vendor Advisories

suse-csafopenSUSE-SU-2024:10181-1
suse-csafSUSE-SU-2016:1602-1
suse-csafSUSE-SU-2016:1584-1
suse-csafSUSE-SU-2016:1568-1
suse-csafSUSE-SU-2016:1563-1

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://bugs.ntp.org/3046Issue TrackingVendor Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.htmlMailing ListThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.htmlMailing ListThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.htmlMailing ListThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.htmlMailing ListThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.htmlMailing ListThird Party Advisory

Show all 13 references

http://support.ntp.org/bin/view/Main/NtpBug3046PatchVendor Advisory

http://support.ntp.org/bin/view/Main/SecurityNoticeRelease NotesVendor Advisory

http://www.kb.cert.org/vuls/id/321640Third Party AdvisoryUS Government Resource

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory

http://www.securitytracker.com/id/1036037Third Party AdvisoryVDB Entry

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.ascThird Party Advisory

https://security.gentoo.org/glsa/201607-15Third Party Advisory

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