CVE-2018-14647

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.
Overview
  • CVE ID
  • CVE-2018-14647
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-09-25T00:29:00
  • Last Modified Date
  • 2020-07-29T12:15:14
Weakness Enumerations
CWE URL
CWE-909 http://cwe.mitre.org/data/definitions/909.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 1 OR 2.7.0 2.7.15
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 1 OR 3.4.0 3.4.9
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 1 OR 3.5.0 3.5.6
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 1 OR 3.6.0 3.6.6
cpe:2.3:a:python:python:3.7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14647 Issue Tracking Third Party Advisory
https://bugs.python.org/issue34623 Issue Tracking Patch Vendor Advisory
http://www.securityfocus.com/bid/105396 Third Party Advisory VDB Entry
https://www.debian.org/security/2018/dsa-4306 Third Party Advisory
https://www.debian.org/security/2018/dsa-4307 Third Party Advisory
http://www.securitytracker.com/id/1041740 Third Party Advisory VDB Entry
https://usn.ubuntu.com/3817-1/ Third Party Advisory
https://usn.ubuntu.com/3817-2/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1260 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2030 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3725 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing List Third Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2018-14647
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14647
History
Created Old Value New Value Data Type Notes
2022-05-10 16:39:16 Added to TrackCVE
2022-12-03 12:31:10 2018-09-25T00:29Z 2018-09-25T00:29:00 CVE Published Date updated
2022-12-03 12:31:10 2020-07-29T12:15:14 CVE Modified Date updated
2022-12-03 12:31:10 Modified Vulnerability Status updated