CVE-2013-2099
Python Wildcard SSL Match Denial of Service
Description
Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate.
INFO
Published Date :
Oct. 9, 2013, 2:53 p.m.
Last Modified :
Feb. 13, 2023, 4:42 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
8.6
Public PoC/Exploit Available at Github
CVE-2013-2099 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2013-2099.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Fast Python Vulnerability Scanner
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2013-2099 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2013-2099 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2023
Action Type Old Value New Value Changed Description A denial of service flaw was found in the way Python's SSL module implementation performed matching of certain certificate names. A remote attacker able to obtain a valid certificate that contained multiple wildcard characters could use this flaw to issue a request to validate such a certificate, resulting in excessive consumption of CPU. Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate. Removed CVSS V2 Red Hat, Inc. (AV:N/AC:H/Au:N/C:N/I:N/A:P) Removed Reference https://access.redhat.com/errata/RHBA-2016:1500 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2014:1263 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2014:1690 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2015:0042 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2013-2099 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description Algorithmic complexity vulnerability in the ssl.match_hostname function in Python 3.2.x, 3.3.x, and earlier, and unspecified versions of python-backports-ssl_match_hostname as used for older Python versions, allows remote attackers to cause a denial of service (CPU consumption) via multiple wildcard characters in the common name in a certificate. A denial of service flaw was found in the way Python's SSL module implementation performed matching of certain certificate names. A remote attacker able to obtain a valid certificate that contained multiple wildcard characters could use this flaw to issue a request to validate such a certificate, resulting in excessive consumption of CPU. Added CVSS V2 Red Hat, Inc. (AV:N/AC:H/Au:N/C:N/I:N/A:P) Added Reference https://access.redhat.com/errata/RHSA-2014:1263 [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2013-2099 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2014:1690 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2015:0042 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHBA-2016:1500 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 09, 2016
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2016:1166 -
CVE Modified by [email protected]
Dec. 03, 2014
Action Type Old Value New Value Added Reference http://rhn.redhat.com/errata/RHSA-2014-1690.html -
Initial Analysis by [email protected]
Oct. 09, 2013
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2013-2099 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2013-2099
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
5.33 }} -0.66%
score
0.91899
percentile