CVE-2011-2686

Severity Score

9.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Ruby before 1.8.7-p352 does not reset the random seed upon forking, which makes it easier for context-dependent attackers to predict the values of random numbers by leveraging knowledge of the number sequence obtained in a different child process, a related issue to CVE-2003-0900. NOTE: this issue exists because of a regression during Ruby 1.8.6 development.

Ruby en versiones anteriores a la 1.8.7-p352 no resetea la semilla aleatoria después de la creacción de procesos ("forking"), lo que facilita a atacantes dependientes del contexto predecir los valores de números aleatorios basándose en el conocimiento de números de secuencia obtenidos de procesos hijo diferentes. Vulnerabilidad relacionada con la CVE-2003-0900. NOTA: este problema existe debido a una regresión durante el desarrollo de Ruby 1.8.6.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-07-11 CVE Reserved
2011-08-05 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-310: Cryptographic Issues

CAPEC

References (13)

URL	Tag	Source
http://redmine.ruby-lang.org/issues/show/4338	X_refsource_confirm
http://svn.ruby-lang.org/repos/ruby/tags/v1_8_7_352/ChangeLog	X_refsource_confirm
http://www.securityfocus.com/bid/49015	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/69032	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063062.html	2023-11-07
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/063071.html	2023-11-07
http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=31713	2023-11-07
http://www.openwall.com/lists/oss-security/2011/07/11/1	2023-11-07
http://www.openwall.com/lists/oss-security/2011/07/12/14	2023-11-07
http://www.openwall.com/lists/oss-security/2011/07/20/1	2023-11-07
http://www.openwall.com/lists/oss-security/2011/07/20/16	2023-11-07
http://www.ruby-lang.org/en/news/2011/07/02/ruby-1-8-7-p352-released	2023-11-07
https://bugzilla.redhat.com/show_bug.cgi?id=722415	2023-11-07

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				<= 1.8.7-334 Search vendor "Ruby-lang" for product "Ruby" and version " <= 1.8.7-334"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7"		p22		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7"		p71		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7"		p72		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-160 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-160"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-173 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-173"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-248 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-248"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-249 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-249"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-299 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-299"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-302 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-302"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-330 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-330"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.8.7-p21 Search vendor "Ruby-lang" for product "Ruby" and version "1.8.7-p21"		-		Affected