Mend.io Vulnerability Database

What is a CVE vulnerability ID? icon What is a WS vulnerability ID? icon What is an MSC vulnerability ID? icon
New vulnerability? Tell us about it!
icon

We found results for “”

CVE-2018-20843

Good to know:

icon

Date: June 24, 2019

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).

Language: C

Severity Score

Related Resources (25)

https://www.oracle.com/security-alerts/cpuapr2020.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00039.html
https://www.oracle.com/security-alerts/cpuApr2021.html
https://access.redhat.com/security/cve/CVE-2018-20843
https://www.debian.org/security/2019/dsa-4472
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDAUGEB3TUP6NEKJDBUBZX7N5OAUOOOK/
https://www.oracle.com/security-alerts/cpuoct2020.html
https://github.com/libexpat/libexpat/pull/262/commits/11f8838bf99ea0a6f0b76f9760c43704d00c4ff6
https://github.com/libexpat/libexpat/issues/186
https://www.tenable.com/security/tns-2021-11
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CEJJSQSG3KSUQY4FPVHZ7ZTT7FORMFVD/
https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
https://security.gentoo.org/glsa/201911-08
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5226
https://security.netapp.com/advisory/ntap-20190703-0001/
https://lists.debian.org/debian-lts-announce/2019/06/msg00028.html
https://github.com/libexpat/libexpat/pull/262
https://security-tracker.debian.org/tracker/CVE-2018-20843
https://usn.ubuntu.com/4040-2/
https://usn.ubuntu.com/4040-1/
https://seclists.org/bugtraq/2019/Jun/39
https://nvd.nist.gov/vuln/detail/CVE-2018-20843
https://support.f5.com/csp/article/K51011533
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.mend.io/vulnerability-database/CVE-2018-20843

Severity Score

Weakness Type (CWE)

Improper Restriction of XML External Entity Reference ('XXE')

CWE-611

Top Fix

icon

Upgrade Version

Upgrade to version 2.2.7

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

Do you need more information?

Contact Us