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…
Does this matter?
Lower severity and a low EPSS score (2.80%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
- EPSS
- 2.80% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- python/python
- Source
- cve@mitre.org
References
- http://bugs.python.org/issue6706Patch, Vendor Advisory
- http://bugs.python.org/issue9129Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
- http://secunia.com/advisories/43068
- http://secunia.com/advisories/50858
- http://secunia.com/advisories/51024
- http://secunia.com/advisories/51040
- http://svn.python.org/view/python/branches/py3k/Lib/smtpd.py?r1=84289&r2=84288&pathrev=84289Patch
- http://svn.python.org/view?view=rev&revision=84289
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:215
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:216
- http://www.openwall.com/lists/oss-security/2010/09/09/6
- http://www.openwall.com/lists/oss-security/2010/09/11/2
- http://www.openwall.com/lists/oss-security/2010/09/22/3
- http://www.openwall.com/lists/oss-security/2010/09/24/3
- http://www.securityfocus.com/bid/44533
- http://www.ubuntu.com/usn/USN-1596-1
- http://www.ubuntu.com/usn/USN-1613-1
- http://www.ubuntu.com/usn/USN-1613-2
- http://www.vupen.com/english/advisories/2011/0212
- https://bugs.launchpad.net/zodb/+bug/135108
- https://bugzilla.redhat.com/show_bug.cgi?id=632200
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12210
- http://bugs.python.org/issue6706Patch, Vendor Advisory
- http://bugs.python.org/issue9129Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
- http://secunia.com/advisories/43068
- http://secunia.com/advisories/50858
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.