--- title: "CVE-2010-3493\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2010-3493?format=md keywords: index, follow --- # CVE-2010-3493 Publication date 19 October 2010 Last updated 24 July 2024 --- Ubuntu priority **Negligible** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## 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. [Read the notes from the security team](https://ubuntu.com/security/CVE-2010-3493?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | python2.4 | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 9.10 karmic | Not in release | | 9.04 jaunty | Not in release | | 8.04 LTS hardy | Fixed 2.4.5-1ubuntu4.4 | | 6.06 LTS dapper | Ignored end of life | | python2.5 | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not in release | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 9.10 karmic | Not in release | | 9.04 jaunty | Not in release | | 8.04 LTS hardy | Fixed 2.5.2-2ubuntu6.2 | | 6.06 LTS dapper | Ignored end of life | | python2.6 | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not affected | | 11.04 natty | Not affected | | 10.10 maverick | Not affected | | 10.04 LTS lucid | Fixed 2.6.5-1ubuntu6.1 | | 9.10 karmic | Not in release | | 9.04 jaunty | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | python2.7 | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 11.04 natty | Not affected | | 10.10 maverick | Not affected | | 10.04 LTS lucid | Not in release | | 8.04 LTS hardy | Not in release | | python3.1 | 12.04 LTS precise | Not in release | | 11.10 oneiric | Not in release | | 11.04 natty | Not affected | | 10.10 maverick | Not affected | | 10.04 LTS lucid | Fixed 3.1.2-0ubuntu3.1 | | 9.10 karmic | Ignored end of life | | 9.04 jaunty | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | | python3.2 | 12.04 LTS precise | Not affected | | 11.10 oneiric | Not affected | | 11.04 natty | Not affected | | 10.10 maverick | Not in release | | 10.04 LTS lucid | Not in release | | 9.10 karmic | Not in release | | 9.04 jaunty | Not in release | | 8.04 LTS hardy | Not in release | | 6.06 LTS dapper | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2010-3493?format=md#patch-details) ## Notes --- ### [jdstrand](https://launchpad.net/~jdstrand) python3.1 on Ubuntu 10.10 has additional patches on top of 3.1.2, including a fix for this issue ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | python2.4 | * Vendor: | | python2.5 | * Vendor: | | python2.6 | * Vendor: * Other: | | python3.1 | * Upstream: | ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3493) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2010-3493) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2010-3493) * [Debian](https://security-tracker.debian.org/tracker/CVE-2010-3493) ### Related Ubuntu Security Notices (USN) + [USN-1613-1](https://usn.ubuntu.com/USN-1613-1) + Python 2.5 vulnerabilities + 17 October 2012 + [USN-1314-1](https://usn.ubuntu.com/USN-1314-1) + Python 3 vulnerabilities + 19 December 2011 + [USN-1613-2](https://usn.ubuntu.com/USN-1613-2) + Python 2.4 vulnerabilities + 17 October 2012 + [USN-1596-1](https://usn.ubuntu.com/USN-1596-1) + Python 2.6 vulnerabilities + 4 October 2012 ### Other references *