Amazon Linux 1 Security Advisory: ALAS-2017-909
Advisory Release Date: 2017-10-12 19:37 Pacific
Advisory Updated Date: 2017-10-13 00:09 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
Server memory information leak over SMB1:
An information leak flaw was found in the way SMB1 protocol was implemented by Samba. A malicious client could use this flaw to dump server memory contents to a file on the samba share or to a shared printer, though the exact area of server memory cannot be controlled by the attacker. (CVE-2017-12163)
SMB2 connections don't keep encryption across DFS redirects
A flaw was found in the way samba client used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack. (CVE-2017-12151)
Some code path don't enforce smb signing, when they should
It was found that samba did not enforce "SMB signing" when certain configuration options were enabled. A remote attacker could launch a man-in-the-middle attack and retrieve information in plain-text. (CVE-2017-12150)
Affected Packages:
samba
Issue Correction:
Run yum update samba to update your system.
i686:
samba-libs-4.6.2-11.36.amzn1.i686
samba-test-libs-4.6.2-11.36.amzn1.i686
samba-client-libs-4.6.2-11.36.amzn1.i686
libsmbclient-devel-4.6.2-11.36.amzn1.i686
ctdb-4.6.2-11.36.amzn1.i686
samba-winbind-krb5-locator-4.6.2-11.36.amzn1.i686
samba-test-4.6.2-11.36.amzn1.i686
samba-winbind-clients-4.6.2-11.36.amzn1.i686
samba-common-tools-4.6.2-11.36.amzn1.i686
ctdb-tests-4.6.2-11.36.amzn1.i686
samba-4.6.2-11.36.amzn1.i686
libsmbclient-4.6.2-11.36.amzn1.i686
samba-common-libs-4.6.2-11.36.amzn1.i686
samba-winbind-4.6.2-11.36.amzn1.i686
libwbclient-devel-4.6.2-11.36.amzn1.i686
libwbclient-4.6.2-11.36.amzn1.i686
samba-python-4.6.2-11.36.amzn1.i686
samba-debuginfo-4.6.2-11.36.amzn1.i686
samba-client-4.6.2-11.36.amzn1.i686
samba-devel-4.6.2-11.36.amzn1.i686
samba-krb5-printing-4.6.2-11.36.amzn1.i686
samba-winbind-modules-4.6.2-11.36.amzn1.i686
noarch:
samba-pidl-4.6.2-11.36.amzn1.noarch
samba-common-4.6.2-11.36.amzn1.noarch
src:
samba-4.6.2-11.36.amzn1.src
x86_64:
ctdb-tests-4.6.2-11.36.amzn1.x86_64
libsmbclient-devel-4.6.2-11.36.amzn1.x86_64
samba-devel-4.6.2-11.36.amzn1.x86_64
samba-test-4.6.2-11.36.amzn1.x86_64
samba-common-tools-4.6.2-11.36.amzn1.x86_64
samba-debuginfo-4.6.2-11.36.amzn1.x86_64
samba-test-libs-4.6.2-11.36.amzn1.x86_64
ctdb-4.6.2-11.36.amzn1.x86_64
samba-client-libs-4.6.2-11.36.amzn1.x86_64
libsmbclient-4.6.2-11.36.amzn1.x86_64
samba-client-4.6.2-11.36.amzn1.x86_64
libwbclient-4.6.2-11.36.amzn1.x86_64
samba-winbind-4.6.2-11.36.amzn1.x86_64
libwbclient-devel-4.6.2-11.36.amzn1.x86_64
samba-libs-4.6.2-11.36.amzn1.x86_64
samba-winbind-krb5-locator-4.6.2-11.36.amzn1.x86_64
samba-krb5-printing-4.6.2-11.36.amzn1.x86_64
samba-python-4.6.2-11.36.amzn1.x86_64
samba-common-libs-4.6.2-11.36.amzn1.x86_64
samba-4.6.2-11.36.amzn1.x86_64
samba-winbind-clients-4.6.2-11.36.amzn1.x86_64
samba-winbind-modules-4.6.2-11.36.amzn1.x86_64