CVE-2011-2686

Severity Score

5.0

*CVSS v2

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

CVSS Scores

NISTv2 5.0

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
2023-03-07 EPSS Updated
2024-08-06 CVE 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