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CVE
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CVE-2018-14647Date: (C)2018-10-04   (M)2024-03-26


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.5CVSS Score : 5.0
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
SECTRACK-1041740
BID-105396
DSA-4306
DSA-4307
FEDORA-2019-0c91ce7b3c
RHSA-2019:1260
RHSA-2019:2030
RHSA-2019:3725
USN-3817-1
USN-3817-2
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.html
https://lists.debian.org/debian-lts-announce/2019/06/msg00023.html
https://bugs.python.org/issue34623
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14647
openSUSE-SU-2020:0086

CPE    9
cpe:/o:debian:debian_linux:9.0
cpe:/o:canonical:ubuntu_linux:16.04::~~lts~~~
cpe:/o:redhat:enterprise_linux_workstation:7.0
cpe:/o:redhat:enterprise_linux_desktop:7.0
...
OVAL    44
oval:org.secpod.oval:def:89002491
oval:org.secpod.oval:def:89003064
oval:org.secpod.oval:def:504856
oval:org.secpod.oval:def:89003342
...

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