synced 8 MIN AGO
01 Record

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

UnratedPUBLISHEDCNA: redhat
CNA base scoreUnratedNo CNA CVSS vector

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.85% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 91.7% of scored records. A rank, not a probability.
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Modified. NVD last modified this record on 2026-06-16.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2013-10-09 14:44Z13 YR AGO
Last updated
2024-08-06 15:27Z2 YR AGO
Reserved
2013-02-19
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
Data version
5.1
Document digest
a589a6ca234bd0e9c049743a909597d5e374159b2ff9391de148abdf587ee180

05 Affected products

VendorProductVersionsPlatforms
canonicalubuntu_linuxNot specified—
pythonpythonNot specified—
redhatenterprise_linuxNot specified—
redhatenterprise_mrgNot specified—
redhatopenshiftNot specified—
redhatopenstackNot specified—
redhatrhel_commonNot specified—
redhatrhel_software_collectionsNot specified—
redhatsatelliteNot specified—
redhatsatellite_capsuleNot specified—
redhatstorageNot specified—
rhel_sam1Not specified—

06 References

07 Fixed in

Debian 12

  • bzr
    Fixed in 2.6.0~bzr6574-1
  • linkchecker
    Fixed in 8.5-1
  • python-tornado
    Fixed in 2.4.1-3
  • python-urllib3
    Fixed in 1.6-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • bzr
    Fixed in 2.6.0~bzr6574-1
  • linkchecker
    Fixed in 8.5-1
  • python-tornado
    Fixed in 2.4.1-3
  • python-urllib3
    Fixed in 1.6-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • linkchecker
    Fixed in 8.5-1
  • python-tornado
    Fixed in 2.4.1-3
  • python-urllib3
    Fixed in 1.6-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • w3af
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.