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amazonAmazonALAS2-2018-1082
HistorySep 20, 2018 - 6:45 p.m.

Important: bind

2018-09-2018:45:00
alas.aws.amazon.com
10

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.5 High

AI Score

Confidence

High

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

0.953 High

EPSS

Percentile

99.3%

Issue Overview:

A denial of service flaw was discovered in bind versions that include the “deny-answer-aliases” feature. This flaw may allow a remote attacker to trigger an INSIST assert in named leading to termination of the process and a denial of service condition.(CVE-2018-5740)

Affected Packages:

bind

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

i686:  
    bind-9.9.4-61.amzn2.1.1.i686  
    bind-pkcs11-9.9.4-61.amzn2.1.1.i686  
    bind-pkcs11-utils-9.9.4-61.amzn2.1.1.i686  
    bind-pkcs11-libs-9.9.4-61.amzn2.1.1.i686  
    bind-pkcs11-devel-9.9.4-61.amzn2.1.1.i686  
    bind-sdb-9.9.4-61.amzn2.1.1.i686  
    bind-libs-lite-9.9.4-61.amzn2.1.1.i686  
    bind-libs-9.9.4-61.amzn2.1.1.i686  
    bind-utils-9.9.4-61.amzn2.1.1.i686  
    bind-devel-9.9.4-61.amzn2.1.1.i686  
    bind-lite-devel-9.9.4-61.amzn2.1.1.i686  
    bind-chroot-9.9.4-61.amzn2.1.1.i686  
    bind-sdb-chroot-9.9.4-61.amzn2.1.1.i686  
    bind-debuginfo-9.9.4-61.amzn2.1.1.i686  
  
src:  
    bind-9.9.4-61.amzn2.1.1.src  
  
x86_64:  
    bind-9.9.4-61.amzn2.1.1.x86_64  
    bind-pkcs11-9.9.4-61.amzn2.1.1.x86_64  
    bind-pkcs11-utils-9.9.4-61.amzn2.1.1.x86_64  
    bind-pkcs11-libs-9.9.4-61.amzn2.1.1.x86_64  
    bind-pkcs11-devel-9.9.4-61.amzn2.1.1.x86_64  
    bind-sdb-9.9.4-61.amzn2.1.1.x86_64  
    bind-libs-lite-9.9.4-61.amzn2.1.1.x86_64  
    bind-libs-9.9.4-61.amzn2.1.1.x86_64  
    bind-utils-9.9.4-61.amzn2.1.1.x86_64  
    bind-devel-9.9.4-61.amzn2.1.1.x86_64  
    bind-lite-devel-9.9.4-61.amzn2.1.1.x86_64  
    bind-chroot-9.9.4-61.amzn2.1.1.x86_64  
    bind-sdb-chroot-9.9.4-61.amzn2.1.1.x86_64  
    bind-debuginfo-9.9.4-61.amzn2.1.1.x86_64  

Additional References

Red Hat: CVE-2018-5740

Mitre: CVE-2018-5740

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.5 High

AI Score

Confidence

High

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

0.953 High

EPSS

Percentile

99.3%