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amazonAmazonALAS-2016-665
HistoryMar 10, 2016 - 4:30 p.m.

Important: bind

2016-03-1016:30:00
alas.aws.amazon.com
8

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.623 Medium

EPSS

Percentile

97.8%

Issue Overview:

A defect in control channel input handling was discovered which can cause named to exit due to an assertion failure in sexpr.c or alist.c when a malformed packet is sent to named’s control channel. If control channel input is accepted from the network (limited to localhost by default), an unauthenticated attacker could cause named to crash. (CVE-2016-1285)

An error when parsing signature records for DNAME records having specific properties can lead to named exiting due to an assertion failure in resolver.c or db.c. An attacker able to cause a server to make a query deliberately chosen to generate a malicious response can cause named to stop execution with an assertion failure, resulting in denial of service to clients. (CVE-2016-1286)

Affected Packages:

bind

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

New Packages:

i686:  
    bind-libs-9.8.2-0.37.rc1.45.amzn1.i686  
    bind-debuginfo-9.8.2-0.37.rc1.45.amzn1.i686  
    bind-devel-9.8.2-0.37.rc1.45.amzn1.i686  
    bind-9.8.2-0.37.rc1.45.amzn1.i686  
    bind-utils-9.8.2-0.37.rc1.45.amzn1.i686  
    bind-chroot-9.8.2-0.37.rc1.45.amzn1.i686  
    bind-sdb-9.8.2-0.37.rc1.45.amzn1.i686  
  
src:  
    bind-9.8.2-0.37.rc1.45.amzn1.src  
  
x86_64:  
    bind-devel-9.8.2-0.37.rc1.45.amzn1.x86_64  
    bind-9.8.2-0.37.rc1.45.amzn1.x86_64  
    bind-libs-9.8.2-0.37.rc1.45.amzn1.x86_64  
    bind-utils-9.8.2-0.37.rc1.45.amzn1.x86_64  
    bind-sdb-9.8.2-0.37.rc1.45.amzn1.x86_64  
    bind-chroot-9.8.2-0.37.rc1.45.amzn1.x86_64  
    bind-debuginfo-9.8.2-0.37.rc1.45.amzn1.x86_64  

Additional References

Red Hat: CVE-2016-1285, CVE-2016-1286

Mitre: CVE-2016-1285, CVE-2016-1286

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.623 Medium

EPSS

Percentile

97.8%