PT-2020-19990 · Nextcloud+2 · Nextcloud Server+2

Published 2020-05-12 · Updated 2020-10-19 · CVE-2020-8155

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Nextcloud Server version 18.0.2

Description The issue is caused by an outdated 3rd party library in the Files PDF viewer, leading to a Cross-site scripting vulnerability when opening a malicious PDF.

Recommendations For Nextcloud Server version 18.0.2, update the 3rd party library used in the Files PDF viewer to a version that is not affected by the Cross-site scripting vulnerability.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2020-3060

CVE-2020-8155

OPENSUSE-SU-2020:0667-1

OPENSUSE-SU-2020:0668-1

OPENSUSE-SU-2020:0670-1

OPENSUSE-SU-2020:1652-1

OPENSUSE-SU-2020_0670-1

OPENSUSE-SU-2020_1652-1

OPENSUSE-SU-2024:11087-1

Affected Products

Alt Linux

Nextcloud Server

Suse

References · 25

• https://osv.dev/vulnerability/CVE-2020-8155 · Vendor Advisory
• https://nextcloud.com/security/advisory/?id=NC-SA-2020-019 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0667-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:1652-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0670-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:0668-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00037.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00040.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-8155 · Security Note
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00038.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00019.html · Vendor Advisory
• https://lists.opensuse.org/archives/list/[e-mail]/thread/TTSRB3RQD5FODAXOSGNYAHI4G3OQVJQD · Note
• https://lists.opensuse.org/archives/list/[e-mail]/thread/JROMOEXBCTJBQUYLEJHEV3556X65S7GE · Note
• https://suse.com/security/cve/CVE-2020-8183 · Note