Security Bulletin: Multiple Vulnerabilities in Samba affect IBM i

Vulnerability Details

CVEID: CVE-2017-15275
DESCRIPTION: Samba could allow a remote attacker to obtain sensitive information, caused by a heap memory information leak. By sending a specially crafted request, an attacker could exploit this vulnerability to obtain password hashes or other high-value data.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/135221 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2017-15087
DESCRIPTION: Samba could allow a remote authenticated attacker to obtain sensitive information, caused by a memory leak over SMB1. By sending specially crafted SMB1 data, an attacker could exploit this vulnerability to cause portions of server memory contents to be written to a file and obtain sensitive information. Note: This is a complete fix for CVE-2017-12163.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134666 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2017-15086
DESCRIPTION: Samba could provide weaker than expected security, caused by the failure to properly sign and encrypt DFS redirects when the max protocol for the original connection is set as ''SMB3''. An attacker could exploit this vulnerability using man-in-the-middle techniques to read and alter confidential documents. Note: This is a complete fix for CVE-2017-12151.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134665 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

CVEID: CVE-2017-15085
DESCRIPTION: Samba could allow a remote attacker to obtain sensitive information, caused by the failure to require SMB signing in SMB1/2/3 connections. An attacker could exploit this vulnerability using man-in-the-middle techniques to hijack client connections and obtain sensitive information. Note: This is a complete fix for CVE-2017-12150.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134664 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2017-14746
DESCRIPTION: Samba could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free memory error. By sending a specially crafted SMB1 request, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/135222 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)