ID CVE-2010-3493
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:*
    cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:*
CVSS
Base: 4.3 (as of 25-10-2019 - 11:53)
Impact:
Exploitability:
CWE CWE-362
CAPEC
  • Leveraging Race Conditions
    This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:N/AC:M/Au:N/C:N/I:N/A:P
oval via4
accepted 2013-11-14T10:21:28.623-05:00
class vulnerability
contributors
  • name SecPod Team
    organization SecPod Technologies
  • name Shane Shaffer
    organization G2, Inc.
  • name Shane Shaffer
    organization G2, Inc.
  • name Maria Kedovskaya
    organization ALTX-SOFT
  • name Maria Kedovskaya
    organization ALTX-SOFT
  • name Maria Kedovskaya
    organization ALTX-SOFT
  • name Maria Kedovskaya
    organization ALTX-SOFT
definition_extensions
comment Python is installed
oval oval:org.mitre.oval:def:11791
description 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.
family windows
id oval:org.mitre.oval:def:12210
status accepted
submitted 2010-11-18T10:50:19
title Vulnerability in smtpd module in Python 2.6, 2.7, 3.1 and 3.2 alpha
version 83
redhat via4
rpms
  • python-0:2.3.4-14.10.el4
  • python-devel-0:2.3.4-14.10.el4
  • python-docs-0:2.3.4-14.10.el4
  • python-tools-0:2.3.4-14.10.el4
  • tkinter-0:2.3.4-14.10.el4
  • python-0:2.4.3-44.el5
  • python-devel-0:2.4.3-44.el5
  • python-libs-0:2.4.3-44.el5
  • python-tools-0:2.4.3-44.el5
  • tkinter-0:2.4.3-44.el5
  • python-docs-0:2.6.6-2.el6
  • python-0:2.6.6-20.el6
  • python-devel-0:2.6.6-20.el6
  • python-libs-0:2.6.6-20.el6
  • python-test-0:2.6.6-20.el6
  • python-tools-0:2.6.6-20.el6
  • tkinter-0:2.6.6-20.el6
refmap via4
bid 44533
confirm
mandriva
  • MDVSA-2010:215
  • MDVSA-2010:216
misc
mlist
  • [oss-security] 20100909 CVE Request -- Python -- accept() implementation in async core is broken => more subcases
  • [oss-security] 20100910 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases
  • [oss-security] 20100922 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases
  • [oss-security] 20100924 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases
secunia
  • 43068
  • 50858
  • 51024
  • 51040
suse
  • SUSE-SR:2010:024
  • SUSE-SR:2011:002
ubuntu
  • USN-1596-1
  • USN-1613-1
  • USN-1613-2
vupen ADV-2011-0212
Last major update 25-10-2019 - 11:53
Published 19-10-2010 - 20:00
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