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amazonAmazonALAS-2015-529
HistoryMay 27, 2015 - 2:05 p.m.

Medium: ruby18

2015-05-2714:05:00
alas.aws.amazon.com
13

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

90.6%

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:

ruby18

Issue Correction:
Run yum update ruby18 to update your system.

New Packages:

i686:  
    ruby18-static-1.8.7.374-2.42.4.amzn1.i686  
    ruby18-libs-1.8.7.374-2.42.4.amzn1.i686  
    ruby18-ri-1.8.7.374-2.42.4.amzn1.i686  
    ruby18-debuginfo-1.8.7.374-2.42.4.amzn1.i686  
    ruby18-devel-1.8.7.374-2.42.4.amzn1.i686  
    ruby18-1.8.7.374-2.42.4.amzn1.i686  
  
noarch:  
    ruby18-irb-0.9.5-2.42.4.amzn1.noarch  
    ruby18-rdoc-1.0.1-2.42.4.amzn1.noarch  
  
src:  
    ruby18-1.8.7.374-2.42.4.amzn1.src  
  
x86_64:  
    ruby18-debuginfo-1.8.7.374-2.42.4.amzn1.x86_64  
    ruby18-static-1.8.7.374-2.42.4.amzn1.x86_64  
    ruby18-1.8.7.374-2.42.4.amzn1.x86_64  
    ruby18-devel-1.8.7.374-2.42.4.amzn1.x86_64  
    ruby18-libs-1.8.7.374-2.42.4.amzn1.x86_64  
    ruby18-ri-1.8.7.374-2.42.4.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

90.6%