CVE-2016-2126

MEDIUM
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Samba version 4.0.0 up to 4.5.2 is vulnerable to privilege elevation due to incorrect handling of the PAC (Privilege Attribute Certificate) checksum. A remote, authenticated, attacker can cause the winbindd process to crash using a legitimate Kerberos ticket. A local service with access to the winbindd privileged pipe can cause winbindd to cache elevated access permissions.

References

http://rhn.redhat.com/errata/RHSA-2017-0494.html

http://rhn.redhat.com/errata/RHSA-2017-0495.html

http://rhn.redhat.com/errata/RHSA-2017-0662.html

http://rhn.redhat.com/errata/RHSA-2017-0744.html

http://www.securityfocus.com/bid/94994

http://www.securitytracker.com/id/1037495

https://access.redhat.com/errata/RHSA-2017:1265

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43730

https://www.samba.org/samba/security/CVE-2016-2126.html

Details

Source: MITRE

Published: 2017-05-11

Updated: 2018-05-11

Type: CWE-264

Risk Information

CVSS v2

Base Score: 4

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:samba:samba:4.0.0:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.1:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.2:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.3:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.4:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.5:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.6:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.7:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.8:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.9:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.10:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.11:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.12:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.13:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.14:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.15:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.16:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.17:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.18:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.19:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.20:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.21:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.22:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.23:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.24:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.25:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.0.26:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.0:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.1:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.2:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.3:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.4:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.5:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.6:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.7:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.8:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.9:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.10:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.11:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.12:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.13:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.14:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.15:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.16:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.17:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.18:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.19:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.20:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.21:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.22:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.1.23:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.0:rc1:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.0:rc2:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.0:rc3:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.0:rc4:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.1:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.2:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.3:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.4:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.5:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.6:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.7:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.8:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.9:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.10:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.11:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.12:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.13:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.2.14:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.0:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.1:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.2:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.3:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.4:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.5:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.6:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.7:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.8:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.9:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.10:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.3.11:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.0:rc1:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.0:rc2:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.0:rc3:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.1:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.2:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.3:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.4:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.5:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.6:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.7:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.8:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.9:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.10:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.11:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.12:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.13:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.14:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.4.15:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.5.0:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.5.1:*:*:*:*:*:*:*

cpe:2.3:a:samba:samba:4.5.2:*:*:*:*:*:*:*

Tenable Plugins

View all (37 total)

IDNameProductFamilySeverity
127327NewStart CGSL MAIN 4.05 : samba4 Multiple Vulnerabilities (NS-SA-2019-0100)NessusNewStart CGSL Local Security Checks
critical
127320NewStart CGSL MAIN 4.05 : samba Multiple Vulnerabilities (NS-SA-2019-0096)NessusNewStart CGSL Local Security Checks
critical
109920Pulse Policy Secure Multiple Vulnerabilities (SA43730)NessusMisc.
medium
109919Pulse Connect Secure Multiple Vulnerabilities (SA43730)NessusMisc.
medium
101469Virtuozzo 7 : ctdb / ctdb-tests / libsmbclient / etc (VZLSA-2017-1265)NessusVirtuozzo Local Security Checks
high
100698EulerOS 2.0 SP2 : samba (EulerOS-SA-2017-1105)NessusHuawei Local Security Checks
critical
100697EulerOS 2.0 SP1 : samba (EulerOS-SA-2017-1104)NessusHuawei Local Security Checks
critical
100554Amazon Linux AMI : samba (ALAS-2017-834) (SambaCry)NessusAmazon Linux Local Security Checks
critical
100350Scientific Linux Security Update : samba on SL7.x x86_64 (20170522)NessusScientific Linux Local Security Checks
high
100346RHEL 7 : samba (RHSA-2017:1265)NessusRed Hat Local Security Checks
high
100344Oracle Linux 7 : samba (ELSA-2017-1265)NessusOracle Linux Local Security Checks
high
100329CentOS 7 : samba (CESA-2017:1265)NessusCentOS Local Security Checks
high
99225Scientific Linux Security Update : samba on SL6.x i386/x86_64 (20170321)NessusScientific Linux Local Security Checks
medium
99224Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20170321)NessusScientific Linux Local Security Checks
medium
99072Oracle Linux 6 : samba4 (ELSA-2017-0744)NessusOracle Linux Local Security Checks
medium
99069Oracle Linux 6 : samba (ELSA-2017-0662)NessusOracle Linux Local Security Checks
medium
97960CentOS 6 : samba4 (CESA-2017:0744)NessusCentOS Local Security Checks
medium
97957CentOS 6 : samba (CESA-2017:0662)NessusCentOS Local Security Checks
medium
97931RHEL 7 : Gluster Storage (RHSA-2017:0495)NessusRed Hat Local Security Checks
medium
97930RHEL 6 : Gluster Storage (RHSA-2017:0494)NessusRed Hat Local Security Checks
medium
97884RHEL 6 : samba4 (RHSA-2017:0744)NessusRed Hat Local Security Checks
medium
97880RHEL 6 : samba (RHSA-2017:0662)NessusRed Hat Local Security Checks
medium
96361Fedora 24 : 2:samba (2017-d0a537062c)NessusFedora Local Security Checks
medium
9857Samba 4.3.x < 4.3.13 / 4.4.x < 4.4.8 / 4.5.x < 4.5.3 Multiple VulnerabilitiesNessus Network MonitorSamba
high
96294openSUSE Security Update : samba (openSUSE-2017-12)NessusSuSE Local Security Checks
high
96293openSUSE Security Update : samba (openSUSE-2017-11)NessusSuSE Local Security Checks
high
96262SUSE SLES11 Security Update : samba (SUSE-SU-2016:3300-1)NessusSuSE Local Security Checks
medium
96261SUSE SLES12 Security Update : samba (SUSE-SU-2016:3299-1)NessusSuSE Local Security Checks
high
96260SUSE SLES11 Security Update : samba (SUSE-SU-2016:3298-1)NessusSuSE Local Security Checks
medium
96166Slackware 14.2 / current : samba (SSA:2016-363-02)NessusSlackware Local Security Checks
high
96164FreeBSD : samba -- multiple vulnerabilities (e4bc323f-cc73-11e6-b704-000c292e4fd8)NessusFreeBSD Local Security Checks
high
96149SUSE SLED12 / SLES12 Security Update : samba (SUSE-SU-2016:3272-1)NessusSuSE Local Security Checks
high
96148SUSE SLED12 / SLES12 Security Update : samba (SUSE-SU-2016:3271-1)NessusSuSE Local Security Checks
high
96142Samba 4.3.x < 4.3.13 / 4.4.x < 4.4.8 / 4.5.x < 4.5.3 Multiple VulnerabilitiesNessusMisc.
high
96108Fedora 25 : 2:samba (2016-364f61377b)NessusFedora Local Security Checks
medium
95949Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : samba vulnerabilities (USN-3158-1)NessusUbuntu Local Security Checks
high
95936Debian DSA-3740-1 : samba - security updateNessusDebian Local Security Checks
high