PT-2021-15251 · Nextcloud+2 · Nextcloud Desktop Client+2

7A69 + 1 · Published 2021-04-14 · Updated 2023-08-30 · CVE-2021-22879

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Nextcloud Desktop Client versions prior to 3.1.3

Description The issue is related to resource injection due to missing validation of URLs, allowing a malicious server to execute remote commands. User interaction is needed for exploitation.

Recommendations For Nextcloud Desktop Client versions prior to 3.1.3, update to version 3.1.3 or later to resolve the issue. As a temporary workaround, consider restricting access to untrusted servers to minimize the risk of exploitation.

Exploit

Fix

Special Elements Injection

Weakness Enumeration

CWE-99

CWE-74

Related Identifiers

ALT-PU-2023-2019

ALT-PU-2023-4584

ALT-PU-2023-5197

CVE-2021-22879

OPENSUSE-SU-2021:0577-1

OPENSUSE-SU-2021_0577-1

OPENSUSE-SU-2024:11088-1

Affected Products

Alt Linux

Nextcloud Desktop Client

Suse

References · 18

• 🔥 https://hackerone.com/reports/1078002 · Exploit
• https://github.com/nextcloud/desktop/pull/2906 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-22879 · Security Note
• https://security.gentoo.org/glsa/202105-37 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0577-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-22879 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-22879 · Security Note
• https://nextcloud.com/security/advisory/?id=NC-SA-2021-008 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-22879 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-22879 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MTWBJAS5DJJIK7LLVBZZQTSJASUVIRVE · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-22879 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-22879 · Vendor Advisory
• https://t.me/cvenotify/13663 · Telegram Post
• https://lists.opensuse.org/archives/list/[e-mail]/thread/YL7MF53UDFP75PXEIEPNXBAJQBN6ZIBB · Note