Python up to 3.3 Hash Collision Form Parameter Parser cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Python up to 3.3. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component Hash Collision Form Parameter Parser. This manipulation causes cryptographic issue. This vulnerability is tracked as CVE-2012-1150. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in Python up to 3.3 (Programming Language Software). Affected by this vulnerability is an unknown code block of the component Hash Collision Form Parameter Parser. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect availability. The summary by CVE is:

Python before 2.6.8, 2.7.x before 2.7.3, 3.x before 3.1.5, and 3.2.x before 3.2.3 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

The weakness was disclosed 12/28/2011 with n.runs AG (Website). It is possible to read the advisory at nruns.com. This vulnerability is known as CVE-2012-1150 since 02/14/2012. The exploitation appears to be easy. The attack can be launched remotely. The requirement for exploitation is a single authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

It is possible to download the exploit at nruns.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 64108 (SuSE 11.1 Security Update : apache2-mod_python (SAT Patch Number 6247)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350649 (Amazon Linux Security Advisory for python26: ALAS-2012-098).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at bugs.python.org. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (64108), OSVDB (80009†) and Secunia (SA48347†). The entries VDB-5572, VDB-8159, VDB-10932 and VDB-10931 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 64108
Nessus Name: SuSE 11.1 Security Update : apache2-mod_python (SAT Patch Number 6247)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 881085
OpenVAS Name: CentOS Update for python CESA-2012:0744 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: bugs.python.org

Timelineinfo

12/28/2011 🔍
02/14/2012 +48 days 🔍
03/12/2012 +27 days 🔍
03/13/2012 +1 days 🔍
03/15/2012 +2 days 🔍
05/03/2012 +49 days 🔍
10/05/2012 +155 days 🔍
01/25/2013 +112 days 🔍
04/29/2019 +2285 days 🔍

Sourcesinfo

Advisory: nruns.com
Organization: n.runs AG
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-1150 (🔍)
GCVE (CVE): GCVE-0-2012-1150
GCVE (VulDB): GCVE-100-4807

OVAL: 🔍
IAVM: 🔍

Secunia: 48347 - Python Web Form Multiple Vulnerabilities, Less Critical
OSVDB: 80009

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/15/2012 14:33
Updated: 04/29/2019 09:22
Changes: 03/15/2012 14:33 (80), 04/29/2019 09:22 (1)
Complete: 🔍
Cache ID: 216:694:103

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