CVE-2009-0642

ruby: Incorrect checks for validity of X.509 certificates

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

ext/openssl/ossl_ocsp.c in Ruby 1.8 and 1.9 does not properly check the return value from the OCSP_basic_verify function, which might allow remote attackers to successfully present an invalid X.509 certificate, possibly involving a revoked certificate.

ext/openssl/ossl_ocsp.c en Ruby v1.8 y v1.9 no comprueba adecuadamente el valor de retorno de la funcion OCSP_basic_verify, lo cual permitiria a atacantes remotos tener exito en la presentacion de un certificado X.509 invalido, posiblemente utilizando un certificado revocado.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-02-18 CVE Reserved
2009-02-18 CVE Published
2024-08-07 CVE Updated
2024-08-07 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-287: Improper Authentication

CAPEC

References (14)

URL	Tag	Source
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513528	X_refsource_misc
http://secunia.com/advisories/33750	Third Party Advisory
http://secunia.com/advisories/35699	Third Party Advisory
http://secunia.com/advisories/35937	Third Party Advisory
http://www.securityfocus.com/bid/33769	Vdb Entry
http://www.securitytracker.com/id?1022505	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/48761	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11450	Signature

URL	Date	SRC
http://redmine.ruby-lang.org/issues/show/1091	2024-08-07

URL	Date	SRC

URL	Date	SRC
http://www.mandriva.com/security/advisories?name=MDVSA-2009:193	2017-09-29
http://www.redhat.com/support/errata/RHSA-2009-1140.html	2017-09-29
http://www.ubuntu.com/usn/USN-805-1	2017-09-29
https://access.redhat.com/security/cve/CVE-2009-0642	2009-07-02
https://bugzilla.redhat.com/show_bug.cgi?id=486183	2009-07-02

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 Search vendor "Ruby-lang" for product "Ruby" and version "1.8"		-		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				1.9 Search vendor "Ruby-lang" for product "Ruby" and version "1.9"		-		Affected