Jean-paul Calderone pyOpenSSL up to 0.13 input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Jean-paul Calderone pyOpenSSL up to 0.13. This vulnerability affects unknown code. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2013-4314. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Jean-paul Calderone pyOpenSSL up to 0.13 (Network Encryption Software). It has been declared as critical. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity. CVE summarizes:

The X509Extension in pyOpenSSL before 0.13.1 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.

The weakness was presented 09/30/2013 by Vincent Danen (Website). The advisory is shared for download at mail.python.org. This vulnerability was named CVE-2013-4314 since 06/12/2013. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 70105 (Debian DSA-2763-1 : pyopenssl - hostname check bypassing), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166321 (OpenSuSE Security Update for python-pyOpenSSL (openSUSE-SU-2013:1648-1)).

Upgrading to version 0.12 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (86936), Tenable (70105), SecurityFocus (BID 62258†) and Vulnerability Center (SBV-41528†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

Support

  • end of life (old version)

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 70105
Nessus Name: Debian DSA-2763-1 : pyopenssl - hostname check bypassing
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892763
OpenVAS Name: Debian Security Advisory DSA 2763-1 (pyopenssl - hostname check bypassing
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: pyOpenSSL 0.12

Timelineinfo

06/12/2013 🔍
09/06/2013 +86 days 🔍
09/06/2013 +0 days 🔍
09/17/2013 +11 days 🔍
09/25/2013 +8 days 🔍
09/30/2013 +5 days 🔍
09/30/2013 +0 days 🔍
03/24/2015 +540 days 🔍
12/25/2024 +3564 days 🔍

Sourcesinfo

Advisory: DSA-2763
Researcher: Vincent Danen
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4314 (🔍)
GCVE (CVE): GCVE-0-2013-4314
GCVE (VulDB): GCVE-100-65068

OVAL: 🔍

X-Force: 86936
SecurityFocus: 62258 - pyOpenSSL SSL Client Certificate Validation Security Bypass Vulnerability
Vulnerability Center: 41528 - pyOpenSSL Before 0.13.1 Remote Spoofing Vulnerability due to a Flaw When Processing the subjectAltName, Medium

Entryinfo

Created: 03/24/2015 15:54
Updated: 12/25/2024 17:57
Changes: 03/24/2015 15:54 (66), 05/11/2017 08:49 (6), 01/08/2022 03:01 (3), 01/08/2022 03:08 (2), 12/25/2024 17:57 (22)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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