Apple Mac OS X up to 10.8 Ruby cryptographic issue

CVSS Meta Temp Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple Mac OS X up to 10.8. It has been declared as problematic. The affected element is an unknown function of the component Ruby. Such manipulation leads to cryptographic issue. This vulnerability is referenced as CVE-2013-4073. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple Mac OS X up to 10.8 (Operating System) and classified as critical. Affected by this issue is some unknown processing of the component Ruby. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The OpenSSL::SSL.verify_certificate_identity function in lib/openssl/ssl.rb in Ruby 1.8 before 1.8.7-p374, 1.9 before 1.9.3-p448, and 2.0 before 2.0.0-p247 does not properly handle a \0 character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

The weakness was published 10/22/2013 by B.J. as APPLE-SA-2013-10-22-3 as confirmed mailinglist post (Apple Security Mailinglist). The advisory is shared for download at lists.apple.com. The mailinglist post contains:

A hostname validation issue existed in Ruby's handling of SSL certificates. This issue was addressed by updating Ruby to version 2.0.0p247.
This vulnerability is handled as CVE-2013-4073 since 06/09/2013. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 75082 (openSUSE Security Update : ruby19 (openSUSE-SU-2013:1181-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167213 (SUSE Enterprise Linux Security Update for ruby (SUSE-SU-2014:0843-1)).

Upgrading to version 10.9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (75082), SecurityFocus (BID 60843†) and Vulnerability Center (SBV-48439†). Similar entries are available at VDB-9299, VDB-10946, VDB-10932 and VDB-10931. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75082
Nessus Name: openSUSE Security Update : ruby19 (openSUSE-SU-2013:1181-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892738
OpenVAS Name: Debian Security Advisory DSA 2738-1 (ruby1.9.1 - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.9

Timelineinfo

06/09/2013 🔍
06/27/2013 +18 days 🔍
08/17/2013 +51 days 🔍
10/22/2013 +66 days 🔍
10/22/2013 +0 days 🔍
10/23/2013 +1 days 🔍
03/18/2014 +146 days 🔍
06/13/2014 +87 days 🔍
02/03/2015 +235 days 🔍
06/01/2021 +2310 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2013-10-22-3
Researcher: B.J.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4073 (🔍)
GCVE (CVE): GCVE-0-2013-4073
GCVE (VulDB): GCVE-100-10940

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 60843 - Ruby SSL Client Certificate Validation CVE-2013-4073 Security Bypass Vulnerability
Vulnerability Center: 48439 - Ruby Remote Security Bypass Vulnerability due to Problematic Certificate Validation, Medium

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 10/23/2013 17:41
Updated: 06/01/2021 08:18
Changes: 10/23/2013 17:41 (80), 06/19/2017 08:22 (3), 06/01/2021 08:18 (3)
Complete: 🔍
Cache ID: 216:B1F:103

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