CVE-2015-5219

CVE-2015-5219 is a high-severity vulnerability in Redhat Enterprise Linux Desktop with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-704.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v2: 5.0
• EPSS exploit prediction: 6% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-704
• Affected product: Redhat Enterprise Linux Desktop
• Published: 2017-07-21
• Last modified: 2026-06-17

Description

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.

Frequently asked questions

What is CVE-2015-5219?

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.

How severe is CVE-2015-5219?

CVE-2015-5219 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2015-5219 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5219?

CVE-2015-5219 primarily affects Redhat Enterprise Linux Desktop. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5219?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-5219 published?

CVE-2015-5219 was published on 2017-07-21 and last updated on 2026-06-17.

References

• http://aix.software.ibm.com/aix/efixes/security/ntp_advisory4.asc
• http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=51786731Gr4-NOrTBC_a_uXO4wuGhg
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html
• http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
• http://lists.opensuse.org/opensuse-updates/2016-12/msg00153.html
• http://rhn.redhat.com/errata/RHSA-2016-0780.html
• http://rhn.redhat.com/errata/RHSA-2016-2583.html
• http://www.debian.org/security/2015/dsa-3388
• http://www.openwall.com/lists/oss-security/2015/08/25/3
• http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
• http://www.securityfocus.com/bid/76473
• http://www.ubuntu.com/usn/USN-2783-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1255118
• https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
• https://github.com/ntp-project/ntp/commit/5f295cd05c3c136d39f5b3e500a2d781bdbb59c8
• https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11
• https://www-01.ibm.com/support/docview.wss?uid=isg3T1024157
• https://www-01.ibm.com/support/docview.wss?uid=swg21985122
• https://www-01.ibm.com/support/docview.wss?uid=swg21986956
• https://www-01.ibm.com/support/docview.wss?uid=swg21988706
• https://www-01.ibm.com/support/docview.wss?uid=swg21989542
• https://www.ibm.com/support/home/docdisplay?lndocid=migr-5099409

Affected products (31)

• cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
• cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:*
• cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:ltss:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:*
• cpe:2.3:o:suse:manager:2.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:manager_proxy:2.1:*:*:*:*:*:*:*
• cpe:2.3:o:suse:openstack_cloud:5:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
• cpe:2.3:a:ntp:ntp:*:p355:*:*:*:*:*:*
• cpe:2.3:o:novell:leap:42.2:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:tim_4r-ie_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:siemens:tim_4r-id_dnp3_firmware:*:*:*:*:*:*:*:*
• cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:*

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