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amazonAmazonALAS-2016-732
HistoryAug 17, 2016 - 1:30 p.m.

Medium: samba

2016-08-1713:30:00
alas.aws.amazon.com
13

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.005 Low

EPSS

Percentile

76.3%

JSON

Issue Overview:

A flaw was found in the way Samba initiated signed DCE/RPC connections. A man-in-the-middle attacker could use this flaw to downgrade the connection to not use signing and therefore impersonate the server.

Affected Packages:

samba

Issue Correction:
Run yum update samba to update your system.

New Packages:

i686:  
    samba-test-4.2.10-7.34.amzn1.i686  
    samba-devel-4.2.10-7.34.amzn1.i686  
    samba-winbind-krb5-locator-4.2.10-7.34.amzn1.i686  
    samba-common-tools-4.2.10-7.34.amzn1.i686  
    samba-winbind-clients-4.2.10-7.34.amzn1.i686  
    samba-test-libs-4.2.10-7.34.amzn1.i686  
    samba-winbind-4.2.10-7.34.amzn1.i686  
    samba-winbind-modules-4.2.10-7.34.amzn1.i686  
    samba-libs-4.2.10-7.34.amzn1.i686  
    samba-python-4.2.10-7.34.amzn1.i686  
    libsmbclient-devel-4.2.10-7.34.amzn1.i686  
    ctdb-devel-4.2.10-7.34.amzn1.i686  
    libwbclient-devel-4.2.10-7.34.amzn1.i686  
    libsmbclient-4.2.10-7.34.amzn1.i686  
    samba-4.2.10-7.34.amzn1.i686  
    ctdb-4.2.10-7.34.amzn1.i686  
    samba-common-libs-4.2.10-7.34.amzn1.i686  
    samba-test-devel-4.2.10-7.34.amzn1.i686  
    samba-debuginfo-4.2.10-7.34.amzn1.i686  
    libwbclient-4.2.10-7.34.amzn1.i686  
    samba-client-4.2.10-7.34.amzn1.i686  
    ctdb-tests-4.2.10-7.34.amzn1.i686  
    samba-client-libs-4.2.10-7.34.amzn1.i686  
  
noarch:  
    samba-pidl-4.2.10-7.34.amzn1.noarch  
    samba-common-4.2.10-7.34.amzn1.noarch  
  
src:  
    samba-4.2.10-7.34.amzn1.src  
  
x86_64:  
    ctdb-tests-4.2.10-7.34.amzn1.x86_64  
    samba-libs-4.2.10-7.34.amzn1.x86_64  
    samba-common-libs-4.2.10-7.34.amzn1.x86_64  
    samba-client-libs-4.2.10-7.34.amzn1.x86_64  
    samba-debuginfo-4.2.10-7.34.amzn1.x86_64  
    libwbclient-devel-4.2.10-7.34.amzn1.x86_64  
    samba-client-4.2.10-7.34.amzn1.x86_64  
    samba-test-devel-4.2.10-7.34.amzn1.x86_64  
    samba-4.2.10-7.34.amzn1.x86_64  
    ctdb-devel-4.2.10-7.34.amzn1.x86_64  
    samba-winbind-modules-4.2.10-7.34.amzn1.x86_64  
    samba-python-4.2.10-7.34.amzn1.x86_64  
    samba-test-libs-4.2.10-7.34.amzn1.x86_64  
    samba-winbind-4.2.10-7.34.amzn1.x86_64  
    samba-test-4.2.10-7.34.amzn1.x86_64  
    samba-winbind-krb5-locator-4.2.10-7.34.amzn1.x86_64  
    samba-devel-4.2.10-7.34.amzn1.x86_64  
    libsmbclient-4.2.10-7.34.amzn1.x86_64  
    samba-common-tools-4.2.10-7.34.amzn1.x86_64  
    samba-winbind-clients-4.2.10-7.34.amzn1.x86_64  
    libsmbclient-devel-4.2.10-7.34.amzn1.x86_64  
    libwbclient-4.2.10-7.34.amzn1.x86_64  
    ctdb-4.2.10-7.34.amzn1.x86_64

Additional References

Red Hat: CVE-2016-2119

Mitre: CVE-2016-2119

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686samba-test< 4.2.10-7.34.amzn1samba-test-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-devel< 4.2.10-7.34.amzn1samba-devel-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-winbind-krb5-locator< 4.2.10-7.34.amzn1samba-winbind-krb5-locator-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-common-tools< 4.2.10-7.34.amzn1samba-common-tools-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-winbind-clients< 4.2.10-7.34.amzn1samba-winbind-clients-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-test-libs< 4.2.10-7.34.amzn1samba-test-libs-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-winbind< 4.2.10-7.34.amzn1samba-winbind-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-winbind-modules< 4.2.10-7.34.amzn1samba-winbind-modules-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-libs< 4.2.10-7.34.amzn1samba-libs-4.2.10-7.34.amzn1.i686.rpm
Amazon Linux1i686samba-python< 4.2.10-7.34.amzn1samba-python-4.2.10-7.34.amzn1.i686.rpm
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7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.005 Low

EPSS

Percentile

76.3%

JSON
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