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cveMitreCVE-2018-20843
HistoryJun 24, 2019 - 5:15 p.m.

CVE-2018-20843

2019-06-2417:15:09
CWE-611
mitre
web.nvd.nist.gov
427
4
expat
xml
parser
vulnerability
cve-2018-20843
denial of service
nvd

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.5

Confidence

High

EPSS

0.582

Percentile

97.7%

JSON

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).

Affected configurations

Nvd
Node
libexpat_projectlibexpatRange<2.2.7
Node
canonicalubuntu_linuxMatch12.04-
OR
canonicalubuntu_linuxMatch14.04esm
OR
canonicalubuntu_linuxMatch16.04lts
OR
canonicalubuntu_linuxMatch18.04lts
OR
canonicalubuntu_linuxMatch18.10
OR
canonicalubuntu_linuxMatch19.04
Node
debiandebian_linuxMatch8.0
OR
debiandebian_linuxMatch9.0
Node
fedoraprojectfedoraMatch29
OR
fedoraprojectfedoraMatch30
Node
opensuseleapMatch15.0
OR
opensuseleapMatch15.1
Node
oraclehospitality_res_3700Range5.7–5.7.6
OR
oraclehttp_serverMatch12.1.3.0
OR
oraclehttp_serverMatch12.2.1.4.0
OR
oracleoutside_in_technologyMatch8.5.4
OR
oracleoutside_in_technologyMatch8.5.5
Node
tenablenessusRange<8.15.0
VendorProductVersionCPE
libexpat_projectlibexpat*cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
canonicalubuntu_linux12.04cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
canonicalubuntu_linux14.04cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonicalubuntu_linux16.04cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.04cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonicalubuntu_linux18.10cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonicalubuntu_linux19.04cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
debiandebian_linux8.0cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
fedoraprojectfedora29cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
Rows per page:
1-10 of 191

References

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CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.5

Confidence

High

EPSS

0.582

Percentile

97.7%

JSON
Related for CVE-2018-20843
nessus48debian3ubuntucve1openvas18ubuntu4osv8ibm21debiancve1nvd1fedora2veracode1redhatcve1f51rocky2cbl_mariner1mageia1almalinux2cvelist1redhat25alpinelinux1cloudfoundry1prion1suse1centos1gentoo1oraclelinux2amazon3altlinux1photon6oracle4ics1