CVE-2018-14647
Python Elementtree Expat Hash Collision Vulnerability
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.
INFO
Published Date :
Sept. 25, 2018, 12:29 a.m.
Last Modified :
Nov. 7, 2023, 2:53 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2018-14647 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2018-14647
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-14647.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Map Vulnerabilities into Different Layers of the Container Image
Python
None
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-14647 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-14647 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ [No types assigned] Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E [No types assigned] Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E -
CVE Modified by [email protected]
Jul. 29, 2020
Action Type Old Value New Value Added Reference https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned] -
Modified Analysis by [email protected]
Jul. 07, 2020
Action Type Old Value New Value 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 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:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Added CPE Configuration 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:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 06, 2020
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. -
CVE Modified by [email protected]
Jan. 21, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 06, 2019
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2019:3725 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Added CWE Red Hat, Inc. CWE-335 Added CWE Red Hat, Inc. CWE-665 -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-399 CWE-399 CWE-909 -
CVE Modified by [email protected]
Aug. 06, 2019
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2019:2030 [No Types Assigned] -
CVE Modified by [email protected]
Jun. 25, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html [No Types Assigned] Added Reference https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html [No Types Assigned] -
CVE Modified by [email protected]
May. 22, 2019
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2019:1260 [No Types Assigned] -
Modified Analysis by [email protected]
Apr. 18, 2019
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ Third Party Advisory 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:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 29, 2019
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RBJCB2HWOJLP3L7CUQHJHNBHLSVOXJE5/ [No Types Assigned] -
Initial Analysis by [email protected]
Dec. 20, 2018
Action Type Old Value New Value 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 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 https://bugs.python.org/issue34623 No Types Assigned https://bugs.python.org/issue34623 Issue Tracking, Patch, Vendor Advisory Changed Reference Type https://usn.ubuntu.com/3817-1/ No Types Assigned https://usn.ubuntu.com/3817-1/ Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14647 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14647 Issue Tracking, Third Party Advisory Changed Reference Type https://www.debian.org/security/2018/dsa-4306 No Types Assigned https://www.debian.org/security/2018/dsa-4306 Third Party Advisory Changed Reference Type https://www.debian.org/security/2018/dsa-4307 No Types Assigned https://www.debian.org/security/2018/dsa-4307 Third Party Advisory 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://usn.ubuntu.com/3817-2/ No Types Assigned https://usn.ubuntu.com/3817-2/ Third Party Advisory Added CWE CWE-399 Added 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:*:*:*:*:*:*:* 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:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 16, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3817-2/ [No Types Assigned] -
CVE Modified by [email protected]
Nov. 14, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3817-1/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 30, 2018
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1041740 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 29, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2018/dsa-4307 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 28, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2018/dsa-4306 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 27, 2018
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/105396 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 25, 2018
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 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.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-14647 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-14647
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.63 }} -0.26%
score
0.79330
percentile