CVE-2015-7551

ruby: DL:: dlopen could open a library with tainted library name

Severity Score

8.4

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Fiddle::Handle implementation in ext/fiddle/handle.c in Ruby before 2.0.0-p648, 2.1 before 2.1.8, and 2.2 before 2.2.4, as distributed in Apple OS X before 10.11.4 and other products, mishandles tainting, which allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted string, related to the DL module and the libffi library. NOTE: this vulnerability exists because of a CVE-2009-5147 regression.

La implementación Fiddle::Handle en ext/fiddle/handle.c en Ruby en versiones anteriores a 2.0.0-p648, 2.1 en versiones anteriores a 2.1.8 y 2.2 en versiones anteriores a 2.2.4, según se distribuye en Apple OS X en versiones anteriores a 10.11.4 y otros productos, no maneja correctamente el tainting, lo que permite a atacantes dependientes del contexto ejecutar código arbitrario o causar una denegación de servicio (caída de aplicación) a través de una cadena manipulada, relacionado con el módulo DL y la librería libffi. NOTA: esta vulnerabilidad existe por una regresión de CVE-2009-5147.

It was discovered that Ruby DL::dlopen incorrectly handled opening libraries. An attacker could possibly use this issue to open libraries with tainted names. This issue only applied to Ubuntu 14.04 LTS. Tony Arcieri, Jeffrey Walton, and Steffan Ullrich discovered that the Ruby OpenSSL extension incorrectly handled hostname wildcard matching. This issue only applied to Ubuntu 14.04 LTS. Christian Hofstaedtler discovered that Ruby Fiddle::Handle incorrectly handled certain crafted strings. An attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-09-29 CVE Reserved
2016-03-22 CVE Published
2024-08-06 CVE Updated
2025-07-13 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-267: Privilege Defined With Unsafe Actions

CAPEC

References (13)

URL	Tag	Source
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=796344	X_refsource_confirm
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=796551	X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html	X_refsource_confirm
http://www.securityfocus.com/bid/76060	Vdb Entry
https://github.com/ruby/ruby/commit/339e11a7f178312d937b7c95dd3115ce7236597a	X_refsource_confirm
https://people.canonical.com/~ubuntu-security/cve/2015/CVE-2015-7551.html	X_refsource_confirm
https://puppet.com/security/cve/ruby-dec-2015-security-fixes	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://www.ruby-lang.org/en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551	2018-03-28

URL	Date	SRC
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html	2018-03-28
https://access.redhat.com/errata/RHSA-2018:0583	2018-03-28
https://support.apple.com/HT206167	2018-03-28
https://access.redhat.com/security/cve/CVE-2015-7551	2018-03-26
https://bugzilla.redhat.com/show_bug.cgi?id=1248935	2018-03-26

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				<= 10.11.3 Search vendor "Apple" for product "Mac Os X" and version " <= 10.11.3"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				<= 2.0.0-p647 Search vendor "Ruby-lang" for product "Ruby" and version " <= 2.0.0-p647"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.0 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.0"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.1 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.1"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.2 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.2"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.3 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.3"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.4 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.4"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.5 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.5"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.6 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.6"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.1.7 Search vendor "Ruby-lang" for product "Ruby" and version "2.1.7"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.2.0 Search vendor "Ruby-lang" for product "Ruby" and version "2.2.0"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.2.1 Search vendor "Ruby-lang" for product "Ruby" and version "2.2.1"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.2.2 Search vendor "Ruby-lang" for product "Ruby" and version "2.2.2"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				2.2.3 Search vendor "Ruby-lang" for product "Ruby" and version "2.2.3"		-		Affected