CVE-2018-20843
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).
Risk Information
Base Score
7.5
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
Exploitation Probability
5.686
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Vulnerabilities CVE-2018-20843,CVE-2019-15903,CVE-2019-16168,CVE-2021-20099,CVE-2021-20100 are fixed in Nessus 8.15.0 | Windows |
| Vulnerabilities CVE-2018-20843,CVE-2019-15903,CVE-2019-16168,CVE-2021-20099,CVE-2021-20100 are fixed in Tenable Nessus 8.15.0 | Windows |
| Multiple vulnerabilities are affected in Oracle HTTP Server 12.2.1.3.0 | Windows |
| Multiple vulnerabilities are affected in Oracle HTTP Server 12.2.1.4.0 | Windows |
| Multiple Vulnerabilities are affected in IBM Tivoli Monitoring 6.3.0 | Windows |
| Vulnerabilities CVE-2018-20843 are affected in Expat XML Parser 2.2.6 | Windows |
| (RHSA-2020:4484) expat security update expat-2.2.5-4.el8.i686.rpm | Linux |
| (RHSA-2020:4484) expat security update expat-2.2.5-4.el8.x86_64.rpm | Linux |
| (RHSA-2020:4484) expat security update expat-debugsource-2.2.5-4.el8.i686.rpm | Linux |
| (RHSA-2020:4484) expat security update expat-debugsource-2.2.5-4.el8.x86_64.rpm | Linux |
| (RHSA-2020:4484) expat security update expat-devel-2.2.5-4.el8.i686.rpm | Linux |
| (RHSA-2020:4484) expat security update expat-devel-2.2.5-4.el8.x86_64.rpm | Linux |
| XML Parser Toolkit, runtime libraries (USN-7199-1) libxmltok1t64_1.2-4.1ubuntu3.1_amd64.deb | Linux |
| library for rendering vector based animations and art (USN-7198-1) libxmltok1t64_1.2-4.1ubuntu3.1_amd64.deb | Linux |
| Improper Restriction of XML External Entity Reference Vulnerability (CVE-2018-20843) | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-351818 | Expat XML Parser (2.7.3) |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234