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TI-2015-04455 Aliases CVE-2015-5300GHSA-28h7-c4wm-4753

The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to…

Priority MEDIUM 45CWE-361Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 16 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to the system clock that was greater than 128 milliseconds by default, which allows remote attackers to set NTP to an arbitrary time when started with the -g option, or to alter the time by up to 900 seconds otherwise by responding to an unspecified number of requests from trusted sources, and leveraging a resulting denial of service (abort and restart).

Why it matters now

EPSS 0.0913 95th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 16 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 38

CPEVersionsRoleVendor
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*21VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*22VulnerableFedoraproject
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:*11 sp2VulnerableSUSE
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:*11 sp3VulnerableSUSE
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*11 sp4VulnerableSUSE
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*42.1VulnerableopenSUSE
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*13.2VulnerableopenSUSE
cpe:2.3:o:suse:linux_enterprise_desktop:12:*:*:*:*:*:*:*12VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:*12 sp1VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:ltss:*:*:*10 sp4VulnerableSUSE
  • cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* Versions 21 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
  • cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:* Versions 11 sp2 Vulnerable ·SUSE
  • cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:* Versions 11 sp3 Vulnerable ·SUSE
  • cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
  • cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* Versions 42.1 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* Versions 13.2 Vulnerable ·openSUSE
  • cpe:2.3:o:suse:linux_enterprise_desktop:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:* Versions 12 sp1 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:10:sp4:*:*:ltss:*:*:* Versions 10 sp4 Vulnerable ·SUSE
Show 28 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:*11 sp2VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:*11 sp3VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*11 sp4VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:*12 sp1VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:*:*:*:*:*:*:*12VulnerableSUSE
cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:*12 sp1VulnerableSUSE
cpe:2.3:o:suse:manager:2.1:*:*:*:*:*:*:*2.1VulnerableSUSE
cpe:2.3:o:suse:manager_proxy:2.1:*:*:*:*:*:*:*2.1VulnerableSUSE
cpe:2.3:o:suse:openstack_cloud:5:*:*:*:*:*:*:*5VulnerableSUSE
cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:*12VulnerableSUSE
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:*:*:*:*:*:*:*7.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:6.7.z:*:*:*:*:*:*:*6.7.zVulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:*7.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*15.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*15.10VulnerableCanonical
cpe:2.3:a:ntp:ntp:*:p4:*:*:*:*:*:*up to 4.2.8VulnerableNTP Project
  • cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:* Versions 11 sp2 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:ltss:*:*:* Versions 11 sp3 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:* Versions 11 sp4 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:* Versions 12 sp1 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·SUSE
  • cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:* Versions 12 sp1 Vulnerable ·SUSE
  • cpe:2.3:o:suse:manager:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·SUSE
  • cpe:2.3:o:suse:manager_proxy:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·SUSE
  • cpe:2.3:o:suse:openstack_cloud:5:*:*:*:*:*:*:* Versions 5 Vulnerable ·SUSE
  • cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:* Versions 12 Vulnerable ·SUSE
  • cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:6.7.z:*:*:*:*:*:*:* Versions 6.7.z Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:* Versions 15.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
  • cpe:2.3:a:ntp:ntp:*:p4:*:*:*:*:*:* Versions up to 4.2.8 Vulnerable ·NTP Project

Remediation

Red Hat 1 advisory

  • RHSA-2015:1930 Released 2015-10-26 · Red Hat rating Important
    ntp security update
    • Red Hat Enterprise Linux Client (v. 7) ntp-4.2.6p5-19.el7_1.3, ntpdate-4.2.6p5-19.el7_1.3
    • Red Hat Enterprise Linux Client Optional (v. 7) ntp-doc-4.2.6p5-19.el7_1.3, ntp-perl-4.2.6p5-19.el7_1.3, sntp-4.2.6p5-19.el7_1.3
    • Red Hat Enterprise Linux ComputeNode (v. 7) ntp-4.2.6p5-19.el7_1.3, ntpdate-4.2.6p5-19.el7_1.3
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) ntp-doc-4.2.6p5-19.el7_1.3, ntp-perl-4.2.6p5-19.el7_1.3, sntp-4.2.6p5-19.el7_1.3
    • Red Hat Enterprise Linux Desktop (v. 6) ntp-4.2.6p5-5.el6_7.2, ntpdate-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux Desktop Optional (v. 6) ntp-doc-4.2.6p5-5.el6_7.2, ntp-perl-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux HPC Node (v. 6) ntp-4.2.6p5-5.el6_7.2, ntpdate-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) ntp-doc-4.2.6p5-5.el6_7.2, ntp-perl-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux Server (v. 6) ntp-4.2.6p5-5.el6_7.2, ntpdate-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux Server (v. 7) ntp-4.2.6p5-19.ael7b_1.3, ntp-4.2.6p5-19.el7_1.3, ntpdate-4.2.6p5-19.ael7b_1.3 +1
    • Red Hat Enterprise Linux Server Optional (v. 6) ntp-doc-4.2.6p5-5.el6_7.2, ntp-perl-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux Server Optional (v. 7) ntp-doc-4.2.6p5-19.ael7b_1.3, ntp-doc-4.2.6p5-19.el7_1.3, ntp-perl-4.2.6p5-19.ael7b_1.3 +3
    • Red Hat Enterprise Linux Workstation (v. 6) ntp-4.2.6p5-5.el6_7.2, ntpdate-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux Workstation (v. 7) ntp-4.2.6p5-19.el7_1.3, ntpdate-4.2.6p5-19.el7_1.3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) ntp-doc-4.2.6p5-5.el6_7.2, ntp-perl-4.2.6p5-5.el6_7.2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) ntp-doc-4.2.6p5-19.el7_1.3, ntp-perl-4.2.6p5-19.el7_1.3, sntp-4.2.6p5-19.el7_1.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2015:1930
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2015:1930

Timeline

  1. 2026-10-02 Threatist record created from CVE-2015-5300
  2. 2026-10-03 Alias added: GHSA-28h7-c4wm-4753

References

Patch 2

Advisory 33

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences