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CVE-2018-20843 Detail

Description

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).


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html Mailing List  Third Party Advisory 
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226 Issue Tracking  Third Party Advisory 
https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes Release Notes  Third Party Advisory 
https://github.com/libexpat/libexpat/issues/186 Issue Tracking  Patch  Third Party Advisory 
https://github.com/libexpat/libexpat/pull/262 Exploit  Patch  Third Party Advisory 
https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
https://seclists.org/bugtraq/2019/Jun/39 Mailing List  Third Party Advisory 
https://security.gentoo.org/glsa/201911-08 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190703-0001/ Third Party Advisory 
https://support.f5.com/csp/article/K51011533 Third Party Advisory 
https://usn.ubuntu.com/4040-1/ Third Party Advisory 
https://usn.ubuntu.com/4040-2/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4472 Third Party Advisory 
https://www.oracle.com/security-alerts/cpuApr2021.html Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpuapr2020.html Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpuoct2020.html Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpuoct2021.html Patch  Third Party Advisory 
https://www.tenable.com/security/tns-2021-11 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-611 Improper Restriction of XML External Entity Reference cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

21 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20843
NVD Published Date:
06/24/2019
NVD Last Modified:
11/06/2023
Source:
MITRE