CVE-2018-20843: libexpat before 2.2.7 (exclusive); +12 more affected products

Affected technology

libexpat · before 2.2.7 (exclusive)
libexpat project

ubuntu linux · 12.04
canonical

ubuntu linux · 14.04
canonical

ubuntu linux · 16.04
canonical

ubuntu linux · 18.04
canonical

ubuntu linux · 18.10
canonical

ubuntu linux · 19.04
canonical

debian linux · 8.0
debian

debian linux · 9.0
debian

fedora · 29
fedoraproject

fedora · 30
fedoraproject

leap · 15.0
opensuse

leap · 15.1
opensuse

hospitality res 3700 · from 5.7 (inclusive), through 5.7.6 (inclusive)
oracle

http server · 12.1.3.0
oracle

http server · 12.2.1.4.0
oracle

outside in technology · 8.5.4
oracle

outside in technology · 8.5.5
oracle

nessus · before 8.15.0 (exclusive)
tenable

n/a · n/a
Vendor not specified by the source

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · V3.1.0 to before V3.1.5
Siemens

Description’s affected range: before 2.2.7, XML input including XML names that

Component: Not specified by the source

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could disrupt service. NVD’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high. Source advisory’s CVSS 3.1 assessment (base score 7.5/10) rates confidentiality and integrity impact as none; availability impact as high.