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Vulnerability details: VCID-us5b-bv9a-aaaa
Vulnerability ID VCID-us5b-bv9a-aaaa
Aliases CVE-2013-2099
Summary Uncontrolled Resource Consumption Algorithmic complexity vulnerability in the `ssl.match_hostname` function 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.
Status Published
Exploitability 0.5
Weighted Severity 3.9
Risk 1.9
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-399 Resource Management Errors
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-407 Inefficient Algorithmic Complexity
System Score Found at
generic_textual Low http://bugs.python.org/issue17980
generic_textual Low http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2099.html
rhas Low https://access.redhat.com/errata/RHSA-2014:1263
rhas Low https://access.redhat.com/errata/RHSA-2014:1690
rhas Low https://access.redhat.com/errata/RHSA-2015:0042
epss 0.01423 https://api.first.org/data/v1/epss?cve=CVE-2013-2099
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epss 0.05441 https://api.first.org/data/v1/epss?cve=CVE-2013-2099
generic_textual Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2099
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2013-2099
generic_textual Low https://ubuntu.com/security/notices/USN-1983-1
generic_textual Low https://ubuntu.com/security/notices/USN-1984-1
generic_textual Low https://ubuntu.com/security/notices/USN-1985-1
generic_textual Low https://usn.ubuntu.com/usn/usn-1983-1
generic_textual Low https://usn.ubuntu.com/usn/usn-1984-1
generic_textual Low https://usn.ubuntu.com/usn/usn-1985-1
generic_textual Low http://www.openwall.com/lists/oss-security/2013/05/16/6
Reference id Reference type URL
http://bugs.python.org/issue17980
http://people.canonical.com/~ubuntu-security/cve/2013/CVE-2013-2099.html
http://rhn.redhat.com/errata/RHSA-2014-1690.html
https://access.redhat.com/errata/RHSA-2016:1166
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2013-2099.json
https://api.first.org/data/v1/epss?cve=CVE-2013-2099
https://bugzilla.redhat.com/show_bug.cgi?id=963260
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-2099
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2099
http://secunia.com/advisories/55107
http://secunia.com/advisories/55116
https://ubuntu.com/security/notices/USN-1983-1
https://ubuntu.com/security/notices/USN-1984-1
https://ubuntu.com/security/notices/USN-1985-1
https://usn.ubuntu.com/usn/usn-1983-1
https://usn.ubuntu.com/usn/usn-1984-1
https://usn.ubuntu.com/usn/usn-1985-1
http://www.openwall.com/lists/oss-security/2013/05/16/6
http://www.ubuntu.com/usn/USN-1983-1
http://www.ubuntu.com/usn/USN-1984-1
http://www.ubuntu.com/usn/USN-1985-1
708530 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=708530
cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:*
cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:-:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*
CVE-2013-2099 https://nvd.nist.gov/vuln/detail/CVE-2013-2099
GLSA-201401-04 https://security.gentoo.org/glsa/201401-04
RHSA-2014:1263 https://access.redhat.com/errata/RHSA-2014:1263
RHSA-2014:1690 https://access.redhat.com/errata/RHSA-2014:1690
RHSA-2015:0042 https://access.redhat.com/errata/RHSA-2015:0042
USN-1983-1 https://usn.ubuntu.com/1983-1/
USN-1984-1 https://usn.ubuntu.com/1984-1/
USN-1985-1 https://usn.ubuntu.com/1985-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2013-2099
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.78821
EPSS Score 0.01423
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.