CVE-2013-2099
Summary
| CVE | CVE-2013-2099 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2013-10-09 14:53:20 UTC |
| Updated | 2026-04-29 01:13:23 UTC |
| 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. |
Risk And Classification
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
PartialAV:N/AC:M/Au:N/C:N/I:N/A:P
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Canonical | Ubuntu Linux | 12.04 | - | lts | All |
| Operating System | Canonical | Ubuntu Linux | 12.10 | All | All | All |
| Operating System | Canonical | Ubuntu Linux | 13.04 | All | All | All |
| Application | Python | Python | 3.2.0 | All | All | All |
| Application | Python | Python | 3.2.1 | All | All | All |
| Application | Python | Python | 3.2.2 | All | All | All |
| Application | Python | Python | 3.2.3 | All | All | All |
| Application | Python | Python | 3.2.4 | All | All | All |
| Application | Python | Python | 3.2.5 | All | All | All |
| Application | Python | Python | 3.3.0 | All | All | All |
| Application | Python | Python | 3.3.1 | All | All | All |
| Application | Python | Python | 3.3.2 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Bug 963260 – CVE-2013-2099 python: ssl.match_hostname() DoS via certificates with specially crafted hostname wildcard patterns | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | |
| USN-1985-1: Python 3.3 vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Issue 17980: CVE-2013-2099 ssl.match_hostname() trips over crafted wildcard names - Python tracker | af854a3a-2127-422b-91ae-364da2661108 | bugs.python.org | Patch |
| Security Advisory SA55107 - Ubuntu update for python3.2 - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | |
| Security Advisory SA55116 - Ubuntu update for python2.7 - Secunia | af854a3a-2127-422b-91ae-364da2661108 | secunia.com | Vendor Advisory |
| USN-1983-1: Python 2.7 vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | |
| USN-1984-1: Python 3.2 vulnerabilities | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | www.ubuntu.com | |
| oss-security - Re: CVE Request (minor) -- Python 3.2: DoS when matching certificate with many '*' wildcard characters {was: CVE Request (minor) -- python-backports-ssl_match_hostname: Denial of service when matching certificate with many '*' wildcard characters } | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| Red Hat Customer Portal | MITRE | access.redhat.com | |
| CVE-2013-2099 - Red Hat Customer Portal | MITRE | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.