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amazonAmazonALAS-2020-1426
HistoryAug 26, 2020 - 11:10 p.m.

Medium: ruby19, ruby21

2020-08-2623:10:00
alas.aws.amazon.com
24

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.019 Low

EPSS

Percentile

88.2%

Issue Overview:

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent. (CVE-2020-10663)

Affected Packages:

ruby19, ruby21

Issue Correction:
Run yum update ruby19 to update your system.
Run yum update ruby21 to update your system.

New Packages:

i686:  
    ruby21-libs-2.1.9-1.23.amzn1.i686  
    rubygem21-io-console-0.4.3-1.23.amzn1.i686  
    ruby21-2.1.9-1.23.amzn1.i686  
    rubygem21-bigdecimal-1.2.4-1.23.amzn1.i686  
    ruby21-devel-2.1.9-1.23.amzn1.i686  
    ruby21-debuginfo-2.1.9-1.23.amzn1.i686  
    rubygem21-psych-2.0.5-1.23.amzn1.i686  
    ruby19-debuginfo-1.9.3.551-33.71.amzn1.i686  
    ruby19-1.9.3.551-33.71.amzn1.i686  
    rubygem19-bigdecimal-1.1.0-33.71.amzn1.i686  
    ruby19-doc-1.9.3.551-33.71.amzn1.i686  
    ruby19-libs-1.9.3.551-33.71.amzn1.i686  
    rubygem19-json-1.5.5-33.71.amzn1.i686  
    ruby19-devel-1.9.3.551-33.71.amzn1.i686  
    rubygem19-io-console-0.3-33.71.amzn1.i686  
  
noarch:  
    rubygems21-2.2.5-1.23.amzn1.noarch  
    ruby21-irb-2.1.9-1.23.amzn1.noarch  
    ruby21-doc-2.1.9-1.23.amzn1.noarch  
    rubygems21-devel-2.2.5-1.23.amzn1.noarch  
    rubygem19-rake-0.9.2.2-33.71.amzn1.noarch  
    rubygem19-minitest-2.5.1-33.71.amzn1.noarch  
    rubygems19-1.8.23.2-33.71.amzn1.noarch  
    ruby19-irb-1.9.3.551-33.71.amzn1.noarch  
    rubygems19-devel-1.8.23.2-33.71.amzn1.noarch  
    rubygem19-rdoc-3.9.5-33.71.amzn1.noarch  
  
src:  
    ruby21-2.1.9-1.23.amzn1.src  
    ruby19-1.9.3.551-33.71.amzn1.src  
  
x86_64:  
    ruby21-devel-2.1.9-1.23.amzn1.x86_64  
    ruby21-2.1.9-1.23.amzn1.x86_64  
    ruby21-debuginfo-2.1.9-1.23.amzn1.x86_64  
    rubygem21-io-console-0.4.3-1.23.amzn1.x86_64  
    rubygem21-psych-2.0.5-1.23.amzn1.x86_64  
    rubygem21-bigdecimal-1.2.4-1.23.amzn1.x86_64  
    ruby21-libs-2.1.9-1.23.amzn1.x86_64  
    rubygem19-bigdecimal-1.1.0-33.71.amzn1.x86_64  
    rubygem19-io-console-0.3-33.71.amzn1.x86_64  
    ruby19-debuginfo-1.9.3.551-33.71.amzn1.x86_64  
    ruby19-1.9.3.551-33.71.amzn1.x86_64  
    ruby19-libs-1.9.3.551-33.71.amzn1.x86_64  
    ruby19-doc-1.9.3.551-33.71.amzn1.x86_64  
    ruby19-devel-1.9.3.551-33.71.amzn1.x86_64  
    rubygem19-json-1.5.5-33.71.amzn1.x86_64  

Additional References

Red Hat: CVE-2020-10663

Mitre: CVE-2020-10663

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.019 Low

EPSS

Percentile

88.2%