Medium severity · published May 11, 2017
CVE-2016-2126
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
6.5
CVSS
6.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.6% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Samba · Samba
4.0.0 before 4.3.13; 4.4.0 before 4.4.8; 4.5.0 before 4.5.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-2126
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-2126
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0494.html
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0495.html
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0662.html
Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0744.html
Third Party Advisory
http://www.securityfocus.com/bid/94994
Third Party Advisory
http://www.securitytracker.com/id/1037495
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