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 for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 UNKNOWN
ADJACENT_NETWORK
MEDIUM
AV:A/AC:M/Au:N/C:N/I:P/A:P
redhatCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 70%
VendorProductVersion
ntpntp
𝑥
≤ 4.2.7p444
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ntp
bullseye
1:4.2.8p15+dfsg-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ntp
utopic
Fixed 1:4.2.6.p5+dfsg-3ubuntu2.14.10.3
released
trusty
Fixed 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3
released
precise
Fixed 1:4.2.6.p3+dfsg-1ubuntu3.4
released
lucid
ignored
Common Weakness Enumeration
References
http://bugs.ntp.org/show_bug.cgi?id=2781
http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html
http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html
http://marc.info/?l=bugtraq&m=143213867103400&w=2
http://marc.info/?l=bugtraq&m=143213867103400&w=2
http://marc.info/?l=bugtraq&m=145750740530849&w=2
http://rhn.redhat.com/errata/RHSA-2015-1459.html
http://support.apple.com/kb/HT204942
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd
http://tools.cisco.com/security/center/viewAlert.x?alertId=38275
http://www.debian.org/security/2015/dsa-3222
http://www.debian.org/security/2015/dsa-3223
http://www.kb.cert.org/vuls/id/374268
http://www.mandriva.com/security/advisories?name=MDVSA-2015:202
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/73950
http://www.securitytracker.com/id/1032031
http://www.ubuntu.com/usn/USN-2567-1
https://kc.mcafee.com/corporate/index?page=content&id=SB10114
https://security.gentoo.org/glsa/201509-01
http://bugs.ntp.org/show_bug.cgi?id=2781
http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html
http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html
http://marc.info/?l=bugtraq&m=143213867103400&w=2
http://marc.info/?l=bugtraq&m=143213867103400&w=2
http://marc.info/?l=bugtraq&m=145750740530849&w=2
http://rhn.redhat.com/errata/RHSA-2015-1459.html
http://support.apple.com/kb/HT204942
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd
http://tools.cisco.com/security/center/viewAlert.x?alertId=38275
http://www.debian.org/security/2015/dsa-3222
http://www.debian.org/security/2015/dsa-3223
http://www.kb.cert.org/vuls/id/374268
http://www.mandriva.com/security/advisories?name=MDVSA-2015:202
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/73950
http://www.securitytracker.com/id/1032031
http://www.ubuntu.com/usn/USN-2567-1
https://kc.mcafee.com/corporate/index?page=content&id=SB10114
https://security.gentoo.org/glsa/201509-01