rubygems up to 2.0.0 lib/rubygems/version.rb ANCHORED_VERSION_PATTERN cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in rubygems up to 2.0.0 (Programming Language Software). This issue affects the function Gem::Version::ANCHORED_VERSION_PATTERN in the library lib/rubygems/version.rb. The manipulation with an unknown input leads to a cryptographic issues vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is availability. The summary by CVE is:

Algorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems before 1.8.23.2, 1.8.24 through 1.8.26, 2.0.x before 2.0.10, and 2.1.x before 2.1.5, as used in Ruby 1.9.0 through 2.0.0p247, allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression. NOTE: this issue is due to an incomplete fix for CVE-2013-4287.

The weakness was published 10/17/2013 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2013-4363 since 06/12/2013. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 72746 (Amazon Linux AMI : ruby19 (ALAS-2014-290)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166303 (OpenSuSE Security Update for ruby19 (openSUSE-SU-2013:1611-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (87375) and Tenable (72746). Similar entries are available at 11266 and 13039.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
ATT&CK: T1600

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72746
Nessus Name: Amazon Linux AMI : ruby19 (ALAS-2014-290)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 866960
OpenVAS Name: Fedora Update for rubygems FEDORA-2013-17649
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/12/2013 🔍
09/16/2013 +96 days 🔍
10/17/2013 +31 days 🔍
10/17/2013 +0 days 🔍
10/20/2013 +3 days 🔍
03/02/2014 +133 days 🔍
03/24/2015 +387 days 🔍
01/08/2022 +2482 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-4363 (🔍)
X-Force: 87375
Vulnerability Center: 42003 - RubyGems Remote DoS Vulnerability via a Crafted Gem Version due to Regexp Algorithmic Complexity, High
SecurityFocus: 62442

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/08/2022 18:01
Changes: 03/24/2015 15:54 (67), 05/14/2017 08:51 (2), 01/08/2022 18:01 (3)
Complete: 🔍

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