CVE-2018-20843
expat - security update
7.5
HIGH
CVSS 3.1
EPSS 5.6%
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).
How to fix CVE-2018-20843
To remediate CVE-2018-20843, upgrade the affected package to a fixed version below.
- Alpine/expat—upgrade to 2.2.7-r0 or later
- —upgrade to 2.2.6-2 or later
- —upgrade to 2.1.0-6+deb8u5 or later
- —upgrade to 2.2.0-2+deb9u2 or later
- —no fix listed
Is CVE-2018-20843 being exploited?
Moderate — EPSS is 5.6%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (5)
- from 0, < 2.2.7-r0
- from 0, < 2.2.6-2
- from 0, < 2.1.0-6+deb8u5
- from 0, < 2.2.0-2+deb9u2
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |