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Vulnerability Details : CVE-2010-3493

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.
Publish Date : 2010-10-19 Last Update Date : 2013-05-14
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 362

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat low
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P 2010-09-08 2010-06-30
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2010-3493 oval:org.opensuse.security:def:20103493 unix
ELSA-2011:0492: python security update (Moderate) oval:org.mitre.oval:def:23229 unix
ELSA-2011:0554: python security, bug fix, and enhancement update (Moderate) oval:org.mitre.oval:def:23473 unix
RHSA-2011:0491: python security update (Moderate) oval:com.redhat.rhsa:def:20110491 unix
RHSA-2011:0492: python security update (Moderate) oval:com.redhat.rhsa:def:20110492 unix
RHSA-2011:0492: python security update (Moderate) oval:org.mitre.oval:def:21923 unix
RHSA-2011:0554: python security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20110554 unix
RHSA-2011:0554: python security, bug fix, and enhancement update (Moderate) oval:org.mitre.oval:def:21626 unix
USN-1596-1 -- python2.6 vulnerabilities oval:org.mitre.oval:def:18043 unix
VMware ESXi and ESX updates to third party library and ESX Service Console oval:org.mitre.oval:def:19755 unix
Vulnerability in smtpd module in Python 2.6, 2.7, 3.1 and 3.2 alpha oval:org.mitre.oval:def:12210 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2010-3493

# Product Type Vendor Product Version Update Edition Language
1 Application Python Python 2.6 Version Details Vulnerabilities
2 Application Python Python 2.7 Version Details Vulnerabilities
3 Application Python Python 3.1 Version Details Vulnerabilities
4 Application Python Python 3.2 Alpha Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Python Python 4

- References For CVE-2010-3493

http://svn.python.org/view/python/branches/py3k/Lib/smtpd.py?r1=84289&r2=84288&pathrev=84289 CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
SUSE SUSE-SR:2011:002
http://www.vupen.com/english/advisories/2011/0212
VUPEN ADV-2011-0212
http://secunia.com/advisories/43068
SECUNIA 43068
http://www.openwall.com/lists/oss-security/2010/09/09/6
MLIST [oss-security] 20100909 CVE Request -- Python -- accept() implementation in async core is broken => more subcases
http://secunia.com/advisories/51024
SECUNIA 51024
http://www.ubuntu.com/usn/USN-1613-2
UBUNTU USN-1613-2
http://www.ubuntu.com/usn/USN-1613-1
UBUNTU USN-1613-1
http://www.ubuntu.com/usn/USN-1596-1
UBUNTU USN-1596-1
http://www.securityfocus.com/bid/44533
BID 44533 Python Multiple Denial of Service Vulnerabilities Release Date:2014-01-07
http://www.openwall.com/lists/oss-security/2010/09/24/3
MLIST [oss-security] 20100924 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases
http://www.openwall.com/lists/oss-security/2010/09/22/3
MLIST [oss-security] 20100922 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases
http://secunia.com/advisories/51040
SECUNIA 51040
http://www.mandriva.com/security/advisories?name=MDVSA-2010:216
MANDRIVA MDVSA-2010:216
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
SUSE SUSE-SR:2010:024
http://bugs.python.org/issue6706
https://bugzilla.redhat.com/show_bug.cgi?id=632200 CONFIRM
http://www.mandriva.com/security/advisories?name=MDVSA-2010:215
MANDRIVA MDVSA-2010:215
http://www.openwall.com/lists/oss-security/2010/09/11/2
MLIST [oss-security] 20100910 Re: CVE Request -- Python -- accept() implementation in async core is broken => more subcases
http://svn.python.org/view?view=rev&revision=84289 CONFIRM
https://bugs.launchpad.net/zodb/+bug/135108
http://bugs.python.org/issue9129 CONFIRM
http://secunia.com/advisories/50858
SECUNIA 50858

- Metasploit Modules Related To CVE-2010-3493

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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