Vulnerability in Python
CVE-2013-2099
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.
EPSS: 0.049 (91.1th percentile) — read the EPSS interpretation.
Affected products
- Python — versions 3.2.0, 3.2.1, 3.2.2
- Canonical Ubuntu_linux — versions 12.04, 12.10, 13.04
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_MISC)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
- secalert@redhat.com (x_refsource_SECUNIA, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch)
- secalert@redhat.com (x_refsource_SECUNIA, Vendor Advisory, third-party-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2013-2099?
- CVE-2013-2099 is a vulnerability in Python, classified under CWE-399. Published 2013-10-09.
- Is CVE-2013-2099 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.