Vulnerability CVE-2012-4464

Vulnerability Name:

CVE-2012-4464 (CCN-83845)

Assigned:

2012-08-21

Published:

2013-02-28

Updated:

2013-08-27

Summary:

Ruby 1.9.3 before patchlevel 286 and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the (1) exc_to_s or (2) name_err_to_s API function, which marks the string as tainted, a different vulnerability than CVE-2012-4466.
Note: this issue might exist because of a CVE-2011-1005 regression.

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:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
3.7 Low (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 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

Vulnerability Type:

CWE-264

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2012-4464

Source: FEDORA
Type: UNKNOWN
FEDORA-2012-15376

Source: FEDORA
Type: UNKNOWN
FEDORA-2012-15395

Source: MISC
Type: UNKNOWN
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=37068

Source: MLIST
Type: UNKNOWN
[oss-security] 20121002 CVE Request: Ruby safe level bypasses

Source: MLIST
Type: UNKNOWN
[oss-security] 20121003 Re: CVE Request: Ruby safe level bypasses

Source: CCN
Type: Ruby Web Site
Ruby

Source: CONFIRM
Type: Vendor Advisory
http://www.ruby-lang.org/en/news/2012/10/12/cve-2012-4464-cve-2012-4466/

Source: CCN
Type: Red Hat Bugzilla Bug 862598
CVE-2012-4464 ruby 1.9.3: Possibility to bypass Ruby's $SAFE (level 4) semantics

Source: CONFIRM
Type: UNKNOWN
https://bugzilla.redhat.com/show_bug.cgi?id=862598

Source: XF
Type: UNKNOWN
ruby-cve20124464-sec-bypass(83845)

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2012-4464

Vulnerable Configuration:

Configuration 1:

cpe:/a:ruby-lang:ruby:1.9.3:*:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:1.9.3:p0:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:1.9.3:p125:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:1.9.3:p194:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0:*:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0.0:*:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0.0:p0:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0.0:preview1:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0.0:preview2:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0.0:rc1:*:*:*:*:*:*

OR cpe:/a:ruby-lang:ruby:2.0.0:rc2:*:*:*:*:*:*

Configuration CCN 1: