Description
Multiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecified impact via a long variable.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | ntp | 1:4.2.8p10+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | ntp | 1:4.2.8p4+dfsg-3ubuntu5.5 | USN-3349-1 |
| Ubuntu 14.04 LTS | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11 | USN-3349-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | ntp | 4.2.8p10-60.1 | SUSE-SU-2017:1048-1 |
| SLES 12 SP1 | ntp | 4.2.8p10-60.1 | SUSE-SU-2017:1048-1 |
| SLES 12 | ntp | 4.2.8p10-46.23.1 | SUSE-SU-2017:1047-1 |
| SLES 11 SP4 | ntp | 4.2.8p10-63.1 | SUSE-SU-2017:1052-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | ntp | 4.2.8p10-60.1 | SUSE-SU-2017:1048-1 |
| SLES for SAP 12 SP1 | ntp | 4.2.8p10-60.1 | SUSE-SU-2017:1048-1 |
| SLES for SAP 12 | ntp | 4.2.8p10-46.23.1 | SUSE-SU-2017:1047-1 |
| SLES for SAP 11 SP4 | ntp | 4.2.8p10-63.1 | SUSE-SU-2017:1052-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ntp | 4.2.8p15-7.2 | openSUSE-SU-2024:11102-1 |
Advisories 9
- USN-3349-1 ntp vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:11102-1 ntp-4.2.8p15-7.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1048-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1052-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1047-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-21-159-11 Siemens SIMATIC NET CP 443-1 OPC UA CISA ICS & IT advisories · May 6, 2025
- WID-SEC-2025-0370 Apple Mac OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 13, 2025
- VDE-2022-032 AUMA: Multiple Vulnerabilities in Automation Runtime NTP Service CERT@VDE · Aug 9, 2022
- SSA-211752 SSA-211752: Multiple NTP-Client Related Vulnerabilities in SIMATIC CP 443-1 OPC UA Siemens ProductCERT · Feb 8, 2022
References
- 1038123 vdb-entry
- http://support.ntp.org/bin/view/Main/NtpBug3379
- https://support.apple.com/HT208144
- 97051 vdb-entry
- http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu
- https://support.apple.com/kb/HT208144
- USN-3349-1 vendor-advisory
- FEDORA-2017-72323a442f vendor-advisory
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-294/
- https://bto.bluecoat.com/security-advisory/sa147
- 20171101 APPLE-SA-2017-10-31-8 Additional information for APPLE-SA-2017-09-25-1 macOS High Sierra 10.13 mailing-list
- FEDORA-2017-20d54b2782 vendor-advisory
- https://support.f5.com/csp/article/K99254031
- http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html
- 20170925 APPLE-SA-2017-09-25-1 macOS High Sierra 10.13 mailing-list
- 20170422 [slackware-security] ntp (SSA:2017-112-02) mailing-list
- FEDORA-2017-5ebac1c112 vendor-advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
- https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11