CVE-2015-1799
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier
02 Description
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.90% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 59.3% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2015-04-08 10:00Z11 YR AGO
- Last updated
- 2024-08-06 04:54Z2 YR AGO
- Reserved
- 2015-02-17
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 1d996d051d2ef6211469663f195962f331267c65d9e71630f635cb9783bd6e13
05 Affected products
06 References
- www.debian.orgDSA-3222http://www.debian.org/security/2015/dsa-3222
- tools.cisco.com20150408 Network Time Protocol Daemon Symmetric Mode Packet Processing Denial of Service Vulnerabilityhttp://tools.cisco.com/security/center/viewAlert.x?alertId=38275
- listengine.tuxfamily.org[chrony-announce] 20150407 chrony-1.31.1 released (security)http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
- www.ubuntu.comUSN-2567-1http://www.ubuntu.com/usn/USN-2567-1
- www.kb.cert.orgVU#374268http://www.kb.cert.org/vuls/id/374268
- www.securityfocus.com73950http://www.securityfocus.com/bid/73950
- marc.infoSSRT102029http://marc.info/?l=bugtraq&m=143213867103400&w=2
- lists.fedoraproject.orgFEDORA-2015-5761http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html
- support.ntp.orghttp://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- kc.mcafee.comhttps://kc.mcafee.com/corporate/index?page=content&id=SB10114
- lists.fedoraproject.orgFEDORA-2015-5874http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html
- lists.apple.comAPPLE-SA-2015-06-30-2http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- lists.opensuse.orgopenSUSE-SU-2015:0775http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- security.gentoo.orgGLSA-201509-01https://security.gentoo.org/glsa/201509-01
- www.mandriva.comMDVSA-2015:202http://www.mandriva.com/security/advisories?name=MDVSA-2015:202
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- support.apple.comhttp://support.apple.com/kb/HT204942
- marc.infoHPSBHF03557http://marc.info/?l=bugtraq&m=145750740530849&w=2
- rhn.redhat.comRHSA-2015:1459http://rhn.redhat.com/errata/RHSA-2015-1459.html
- bugs.ntp.orghttp://bugs.ntp.org/show_bug.cgi?id=2781
- tools.cisco.com20150408 Multiple Vulnerabilities in ntpd (April 2015) Affecting Cisco Productshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd
- www.debian.orgDSA-3223http://www.debian.org/security/2015/dsa-3223
- www.securitytracker.com1032031http://www.securitytracker.com/id/1032031
07 Fixed in
Debian 11
- ntp Fixed in 1:4.2.6.p5+dfsg-6
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- ntp Fixed in 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.