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amazonAmazonALAS-2015-533
HistoryMay 27, 2015 - 2:06 p.m.

Medium: ruby22

2015-05-2714:06:00
alas.aws.amazon.com
10

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.028 Low

EPSS

Percentile

90.5%

Issue Overview:

As discussed in an upstream announcement (https://www.ruby-lang.org/en/news/2015/04/13/ruby-openssl-hostname-matching-vulnerability/), Ruby’s OpenSSL extension suffers a vulnerability through overly permissive matching of hostnames, which can lead to similar bugs such as CVE-2014-1492.

Affected Packages:

ruby22

Issue Correction:
Run yum update ruby22 to update your system.

New Packages:

i686:  
    ruby22-libs-2.2.2-1.5.amzn1.i686  
    rubygem22-psych-2.0.8-1.5.amzn1.i686  
    ruby22-2.2.2-1.5.amzn1.i686  
    rubygem22-io-console-0.4.3-1.5.amzn1.i686  
    ruby22-debuginfo-2.2.2-1.5.amzn1.i686  
    ruby22-devel-2.2.2-1.5.amzn1.i686  
    rubygem22-bigdecimal-1.2.6-1.5.amzn1.i686  
  
noarch:  
    rubygems22-devel-2.4.5-1.5.amzn1.noarch  
    ruby22-doc-2.2.2-1.5.amzn1.noarch  
    rubygems22-2.4.5-1.5.amzn1.noarch  
    ruby22-irb-2.2.2-1.5.amzn1.noarch  
  
src:  
    ruby22-2.2.2-1.5.amzn1.src  
  
x86_64:  
    ruby22-libs-2.2.2-1.5.amzn1.x86_64  
    ruby22-debuginfo-2.2.2-1.5.amzn1.x86_64  
    ruby22-devel-2.2.2-1.5.amzn1.x86_64  
    ruby22-2.2.2-1.5.amzn1.x86_64  
    rubygem22-bigdecimal-1.2.6-1.5.amzn1.x86_64  
    rubygem22-psych-2.0.8-1.5.amzn1.x86_64  
    rubygem22-io-console-0.4.3-1.5.amzn1.x86_64  

Additional References

Red Hat: CVE-2015-1855

Mitre: CVE-2015-1855

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.028 Low

EPSS

Percentile

90.5%