Executive Summary

Informations
Name CVE-2018-20843 First vendor Publication 2019-06-24
Vendor Cve Last vendor Modification 2019-06-26

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20843

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-611 Information Leak Through XML External Entity File Disclosure

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 22

Sources (Detail)

Source Url
BUGTRAQ https://seclists.org/bugtraq/2019/Jun/39
CONFIRM https://security.netapp.com/advisory/ntap-20190703-0001/
https://support.f5.com/csp/article/K51011533
DEBIAN https://www.debian.org/security/2019/dsa-4472
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
GENTOO https://security.gentoo.org/glsa/201911-08
MISC https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
https://github.com/libexpat/libexpat/issues/186
https://github.com/libexpat/libexpat/pull/262
https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9...
MLIST https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
N/A https://www.oracle.com/security-alerts/cpuapr2020.html
SUSE http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
UBUNTU https://usn.ubuntu.com/4040-1/
https://usn.ubuntu.com/4040-2/

Alert History

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Date Informations
2020-05-23 02:15:22
  • Multiple Updates
2020-05-23 01:12:50
  • Multiple Updates
2019-07-03 17:19:07
  • Multiple Updates
2019-06-30 21:19:24
  • Multiple Updates
2019-06-28 21:19:32
  • Multiple Updates
2019-06-27 05:19:10
  • Multiple Updates
2019-06-25 21:19:15
  • Multiple Updates
2019-06-24 21:19:44
  • First insertion