Python 2.6/2.7/3.1/3.2 getpeername race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Python 2.6/2.7/3.1/3.2. This affects the function getpeername. This manipulation causes race condition. The identification of this vulnerability is CVE-2010-3493. There is no exploit available.

Detailsinfo

A vulnerability has been found in Python 2.6/2.7/3.1/3.2 (Programming Language Software) and classified as problematic. Affected by this vulnerability is the function getpeername. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect availability. The summary by CVE is:

Multiple race conditions in smtpd.py in the smtpd module in Python 2.6, 2.7, 3.1, and 3.2 alpha allow remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, or the getpeername function having an ENOTCONN error, a related issue to CVE-2010-3492.

The weakness was shared 10/19/2010 (Website). The advisory is shared at svn.python.org. This vulnerability is known as CVE-2010-3493 since 09/24/2010. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 75607 (openSUSE Security Update : libpython2_6-1_0 (openSUSE-SU-2010:1051-1)), 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 195289 (Ubuntu Security Notification for Python 2.4 Vulnerabilities (USN-1613-2)).

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 (62706), Tenable (75607), SecurityFocus (BID 44533†), Secunia (SA43068†) and Vulnerability Center (SBV-28041†). The entries VDB-50798, VDB-50797, VDB-50136 and VDB-53804 are related to this item. 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: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75607
Nessus Name: openSUSE Security Update : libpython2_6-1_0 (openSUSE-SU-2010:1051-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 880556
OpenVAS Name: CentOS Update for python CESA-2011:0491 centos4 i386
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

09/24/2010 🔍
10/19/2010 +25 days 🔍
10/19/2010 +0 days 🔍
10/19/2010 +0 days 🔍
10/29/2010 +10 days 🔍
11/08/2010 +10 days 🔍
01/25/2011 +78 days 🔍
06/13/2014 +1235 days 🔍
03/19/2015 +279 days 🔍
09/27/2021 +2384 days 🔍

Sourcesinfo

Advisory: USN-1596-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-3493 (🔍)
GCVE (CVE): GCVE-0-2010-3493
GCVE (VulDB): GCVE-100-55129

OVAL: 🔍
IAVM: 🔍

X-Force: 62706
SecurityFocus: 44533 - Python Multiple Denial of Service Vulnerabilities
Secunia: 43068 - SUSE update for Multiple Packages, Highly Critical
Vulnerability Center: 28041 - Smtpd Module in Python 2.6, 2.7, 3.1, and 3.2 alpha Remote DoS Vulnerability via a TCP Connection, Medium
Vupen: ADV-2011-0212

See also: 🔍

Entryinfo

Created: 03/19/2015 14:37
Updated: 09/27/2021 11:12
Changes: 03/19/2015 14:37 (67), 03/08/2017 22:05 (13), 09/27/2021 11:05 (3), 09/27/2021 11:12 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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