Vulnerability Name:

CVE-2012-4481 (CCN-79106)

Assigned:2012-10-05
Published:2012-10-05
Updated:2023-02-13
Summary:The safe-level feature in Ruby 1.8.7 allows context-dependent attackers to modify strings via the NameError#to_s method when operating on Ruby objects.
Note: this issue is due to an incomplete fix for CVE-2011-1005.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
3.2 Low (Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
3.7 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
4.3 Medium (REDHAT CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
3.2 Low (REDHAT Temporal CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2012-4481

Source: CCN
Type: RHSA-2013-0129
Moderate: ruby security and bug fix update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: RHSA-2013-0612
Moderate: ruby security update

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: oss-security: Jan Lieskovsky | 5 Oct
CVE Request -- ruby (1.8.x with patched CVE-2011-1005): Incomplete fix for CVE-2011-1005 for NameError#to_s method when used on objects

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: CCN
Type: Ruby Web Site
Exception methods can bypass $SAFE

Source: CCN
Type: BID-55813
Ruby '#to_s' Method Incomplete Fix Security Bypass Vulnerability

Source: CCN
Type: Red Hat Bugzilla Bug 863484
CVE-2012-4481 ruby: Incomplete fix for CVE-2011-1005 for NameError#to_s method when used on objects

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Source: XF
Type: UNKNOWN
ruby-tos-sec-bypass(79106)

Source: secalert@redhat.com
Type: UNKNOWN
secalert@redhat.com

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
    • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:5::client:*:*:*:*:*
    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:5::client_workstation:*:*:*:*:*
    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:5::server:*:*:*:*:*
    • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:6:*:*:*:*:*:*:*
    • Configuration RedHat 6:
  • cpe:/o:redhat:enterprise_linux:6::client:*:*:*:*:*
    • Configuration RedHat 7:
  • cpe:/o:redhat:enterprise_linux:6::computenode:*:*:*:*:*
    • Configuration RedHat 8:
  • cpe:/o:redhat:enterprise_linux:6::server:*:*:*:*:*
    • Configuration RedHat 9:
  • cpe:/o:redhat:enterprise_linux:6::workstation:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ruby-lang:ruby:1.9:*:*:*:*:*:*:*
  • OR cpe:/a:ruby-lang:ruby:1.9.1:*:*:*:*:*:*:*
  • OR cpe:/a:ruby-lang:ruby:1.9.1:-p129:*:*:*:*:*:*
  • AND
  • cpe:/o:redhat:enterprise_linux:5:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:5:*:client_workstation:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:5:*:client:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:6:*:server:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux:6:*:workstation:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_desktop:6:*:*:*:*:*:*:*
  • OR cpe:/o:redhat:enterprise_linux_hpc_node:6:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20124481
    V
    		CVE-2012-4481
    2022-05-20
    oval:org.mitre.oval:def:26239
    P
    		SUSE-SU-2014:0844-1 -- Security update for ruby
    2014-09-15
    oval:org.mitre.oval:def:17988
    P
    		USN-1603-1 -- ruby1.8 vulnerabilities
    2014-06-30
    oval:org.mitre.oval:def:17844
    P
    		USN-1603-2 -- ruby1.8 vulnerabilities
    2014-06-30
    oval:org.mitre.oval:def:23147
    P
    		ELSA-2013:0129: ruby security and bug fix update (Moderate)
    2014-05-26
    oval:org.mitre.oval:def:23823
    P
    		ELSA-2013:0612: ruby security update (Moderate)
    2014-05-26
    oval:org.mitre.oval:def:20593
    P
    		RHSA-2013:0612: ruby security update (Moderate)
    2014-02-17
    oval:org.mitre.oval:def:20949
    P
    		RHSA-2013:0129: ruby security and bug fix update (Moderate)
    2014-02-17
    oval:com.ubuntu.precise:def:20124481000
    V
    		CVE-2012-4481 on Ubuntu 12.04 LTS (precise) - medium.
    2013-05-02
    oval:com.redhat.rhsa:def:20130612
    P
    		RHSA-2013:0612: ruby security update (Moderate)
    2013-03-07
    oval:com.redhat.rhsa:def:20130129
    P
    		RHSA-2013:0129: ruby security and bug fix update (Moderate)
    2013-01-08
    BACK
    ruby-lang ruby 1.9
    ruby-lang ruby 1.9.1
    ruby-lang ruby 1.9.1 -p129
    redhat enterprise linux 5
    redhat enterprise linux 5
    redhat enterprise linux 5
    redhat enterprise linux 6
    redhat enterprise linux 6
    redhat enterprise linux desktop 6
    redhat enterprise linux hpc node 6