You are viewing this page in an unauthorized frame window.
This is a potential security issue, you are being redirected to
https://nvd.nist.gov
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
NIST has updated the
NVD program announcement page with additional information regarding
recent concerns and the temporary delays in enrichment efforts.
CVE-2018-14647
Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving NIST webspace.
We have provided these links to other web sites because they
may have information that would be of interest to you. No
inferences should be drawn on account of other sites being
referenced, or not, from this page. There may be other web
sites that are more appropriate for your purpose. NIST does
not necessarily endorse the views expressed, or concur with
the facts presented on these sites. Further, NIST does not
endorse any commercial products that may be mentioned on
these sites. Please address comments about this page to nvd@nist.gov.
CVE Modified by Red Hat, Inc.11/06/2023 9:53:00 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
Added
Reference
Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ [No types assigned]
Removed
Reference
Red Hat, Inc. https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E
Removed
Reference
Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/
OR
*cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
Changed
CPE Configuration
OR
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 2.7.0 up to (including) 2.7.15
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (including) 3.4.9
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (including) 3.5.6
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.6.7
*cpe:2.3:a:python:python:3.7.0:*:*:*:*:*:*:*
OR
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 2.7.0 up to (including) 2.7.15
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (including) 3.4.9
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (including) 3.5.6
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (including) 3.6.6
*cpe:2.3:a:python:python:3.7.0:*:*:*:*:*:*:*
Changed
CPE Configuration
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Changed
CPE Configuration
OR
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
OR
*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Removed
CVSS V3
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Changed
Reference Type
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html No Types Assigned
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing List, Third Party Advisory
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2019:1260 No Types Assigned
https://access.redhat.com/errata/RHSA-2019:1260 Third Party Advisory
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2019:2030 No Types Assigned
https://access.redhat.com/errata/RHSA-2019:2030 Third Party Advisory
Changed
Reference Type
https://access.redhat.com/errata/RHSA-2019:3725 No Types Assigned
https://access.redhat.com/errata/RHSA-2019:3725 Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html Mailing List, Third Party Advisory
Changed
Reference Type
https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html No Types Assigned
https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html Mailing List, Third Party Advisory
CVE Modified by Red Hat, Inc.7/06/2020 6:15:11 PM
Action
Type
Old Value
New Value
Changed
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. Python 3.8, 3.7, 3.6, 3.5, 3.4, 2.7 are believed to be vulnerable.
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.
OR
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
Changed
CPE Configuration
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ Third Party Advisory
OR
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 2.7.0 up to (including) 2.7.15
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.4.0 up to (including) 3.4.9
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (including) 3.5.6
*cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.6.7
*cpe:2.3:a:python:python:3.7.0:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Added
CVSS V2
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added
CVSS V3
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added
CWE
CWE-399
Changed
Reference Type
http://www.securityfocus.com/bid/105396 No Types Assigned
http://www.securityfocus.com/bid/105396 Third Party Advisory, VDB Entry
Changed
Reference Type
http://www.securitytracker.com/id/1041740 No Types Assigned
http://www.securitytracker.com/id/1041740 Third Party Advisory, VDB Entry
Changed
Reference Type
https://bugs.python.org/issue34623 No Types Assigned
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 contructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. Python 3.8, 3.7, 3.6, 3.5, 3.4, 2.7 are believed to be vulnerable.
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. Python 3.8, 3.7, 3.6, 3.5, 3.4, 2.7 are believed to be vulnerable.
Quick Info
CVE Dictionary Entry: CVE-2018-14647 NVD
Published Date: 09/24/2018 NVD
Last Modified: 11/06/2023
Source: Red Hat, Inc.
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
