Vulnerability Name:

CVE-2016-0727 (CCN-110181)

Assigned:2015-12-16
Published:2016-01-26
Updated:2017-04-20
Summary:The crontab script in the ntp package before 1:4.2.6.p3+dfsg-1ubuntu3.11 on Ubuntu 12.04 LTS, before 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 on Ubuntu 14.04 LTS, on Ubuntu Wily, and before 1:4.2.8p4+dfsg-3ubuntu5.3 on Ubuntu 16.04 LTS allows local users with access to the ntp account to write to arbitrary files and consequently gain privileges via vectors involving statistics directory cleanup.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.4 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-264
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2016-0727

Source: MISC
Type: Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/141913/NTP-Privilege-Escalation.html

Source: CCN
Type: Halfdog Web site
NtpCronjobUserNtpToRootPrivilegeEscalation

Source: CCN
Type: NTP Web site
NTP

Source: BID
Type: Third Party Advisory, VDB Entry
81552

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1034808

Source: UBUNTU
Type: Vendor Advisory
USN-3096-1

Source: CONFIRM
Type: Issue Tracking, Patch, Vendor Advisory
https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1528050

Source: CONFIRM
Type: Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1382369

Source: XF
Type: UNKNOWN
ntp-cve20160727-priv-esc(110181)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
  • OR cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.precise:def:20160727000
    V
    		CVE-2016-0727 on Ubuntu 12.04 LTS (precise) - low.
    2017-04-14
    oval:com.ubuntu.trusty:def:20160727000
    V
    		CVE-2016-0727 on Ubuntu 14.04 LTS (trusty) - low.
    2017-04-14
    oval:com.ubuntu.xenial:def:20160727000
    V
    		CVE-2016-0727 on Ubuntu 16.04 LTS (xenial) - low.
    2017-04-14
    oval:com.ubuntu.xenial:def:201607270000000
    V
    		CVE-2016-0727 on Ubuntu 16.04 LTS (xenial) - low.
    2017-04-14
    BACK
    canonical ubuntu linux 12.04
    canonical ubuntu linux 14.04
    canonical ubuntu linux 16.04