Python up to 3.3.2 ssl.match_hostname resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Python up to 3.3.2. It has been declared as problematic. This affects the function ssl.match_hostname. The manipulation results in resource management. This vulnerability is reported as CVE-2013-2099. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in Python up to 3.3.2 (Programming Language Software). Affected is the function ssl.match_hostname. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate.

The weakness was disclosed 10/09/2013 by Florian Weimer with Red Hat Product Security Team (Website). The advisory is shared for download at bugs.python.org. This vulnerability is traded as CVE-2013-2099 since 02/19/2013. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 70269 (Ubuntu 12.10 / 13.04 : python3.3 vulnerabilities (USN-1985-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124707 (Fedora Security Update for python-pymongo (FEDORA-2016-52b294538d)).

The vulnerability is also documented in the databases at X-Force (96133), Tenable (70269), SecurityFocus (BID 59877†), Secunia (SA55107†) and Vulnerability Center (SBV-39829†). The entries VDB-8748, VDB-87755 and VDB-109972 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70269
Nessus Name: Ubuntu 12.10 / 13.04 : python3.3 vulnerabilities (USN-1985-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 866066
OpenVAS Name: Fedora Update for zeroinstall-injector FEDORA-2013-12396
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/19/2013 🔍
05/15/2013 +85 days 🔍
05/30/2013 +15 days 🔍
06/04/2013 +5 days 🔍
10/02/2013 +120 days 🔍
10/02/2013 +0 days 🔍
10/09/2013 +7 days 🔍
10/09/2013 +0 days 🔍
03/24/2015 +531 days 🔍
01/08/2022 +2482 days 🔍

Sourcesinfo

Advisory: USN-1985-1
Researcher: Florian Weimer
Organization: Red Hat Product Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-2099 (🔍)
GCVE (CVE): GCVE-0-2013-2099
GCVE (VulDB): GCVE-100-65232

OVAL: 🔍

X-Force: 96133 - Python ssl.match_hostname() denial of service, Medium Risk
SecurityFocus: 59877 - Python 'ssl.match_hostname()' Function Denial of Service Vulnerability
Secunia: 55107 - Ubuntu update for python3.2, Less Critical
Vulnerability Center: 39829 - Python 3.2 Backports SSL match_hostname DoS Vulnerability (CVE-2013-2099), High

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/08/2022 13:20
Changes: 03/24/2015 15:54 (78), 05/01/2017 11:32 (3), 01/08/2022 13:09 (3), 01/08/2022 13:14 (1), 01/08/2022 13:20 (2)
Complete: 🔍
Cache ID: 216:D53:103

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