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amazonAmazonALAS-2018-1104
HistoryDec 13, 2018 - 5:29 p.m.

Medium: httpd24

2018-12-1317:29:00
alas.aws.amazon.com
40

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

0.007 Low

EPSS

Percentile

79.7%

JSON

Issue Overview:

In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol. (CVE-2018-11763)

Affected Packages:

httpd24

Issue Correction:
Run yum update httpd24 to update your system.

New Packages:

i686:  
    httpd24-tools-2.4.37-1.83.amzn1.i686  
    mod24_proxy_html-2.4.37-1.83.amzn1.i686  
    httpd24-debuginfo-2.4.37-1.83.amzn1.i686  
    httpd24-2.4.37-1.83.amzn1.i686  
    mod24_md-2.4.37-1.83.amzn1.i686  
    mod24_session-2.4.37-1.83.amzn1.i686  
    mod24_ldap-2.4.37-1.83.amzn1.i686  
    httpd24-devel-2.4.37-1.83.amzn1.i686  
    mod24_ssl-2.4.37-1.83.amzn1.i686  
  
noarch:  
    httpd24-manual-2.4.37-1.83.amzn1.noarch  
  
src:  
    httpd24-2.4.37-1.83.amzn1.src  
  
x86_64:  
    httpd24-tools-2.4.37-1.83.amzn1.x86_64  
    httpd24-2.4.37-1.83.amzn1.x86_64  
    httpd24-debuginfo-2.4.37-1.83.amzn1.x86_64  
    mod24_session-2.4.37-1.83.amzn1.x86_64  
    mod24_md-2.4.37-1.83.amzn1.x86_64  
    mod24_ssl-2.4.37-1.83.amzn1.x86_64  
    httpd24-devel-2.4.37-1.83.amzn1.x86_64  
    mod24_ldap-2.4.37-1.83.amzn1.x86_64  
    mod24_proxy_html-2.4.37-1.83.amzn1.x86_64

Additional References

Red Hat: CVE-2018-11763

Mitre: CVE-2018-11763

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686httpd24-tools< 2.4.37-1.83.amzn1httpd24-tools-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686mod24_proxy_html< 2.4.37-1.83.amzn1mod24_proxy_html-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686httpd24-debuginfo< 2.4.37-1.83.amzn1httpd24-debuginfo-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686httpd24< 2.4.37-1.83.amzn1httpd24-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686mod24_md< 2.4.37-1.83.amzn1mod24_md-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686mod24_session< 2.4.37-1.83.amzn1mod24_session-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686mod24_ldap< 2.4.37-1.83.amzn1mod24_ldap-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686httpd24-devel< 2.4.37-1.83.amzn1httpd24-devel-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1i686mod24_ssl< 2.4.37-1.83.amzn1mod24_ssl-2.4.37-1.83.amzn1.i686.rpm
Amazon Linux1noarchhttpd24-manual< 2.4.37-1.83.amzn1httpd24-manual-2.4.37-1.83.amzn1.noarch.rpm
Rows per page:
1-10 of 191

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4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

0.007 Low

EPSS

Percentile

79.7%

JSON
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