PT-2021-18388 · Owncloud · Owncloud

Justin Aarden + 1 · Published 2021-05-20 · Updated 2025-03-31 · CVE-2021-29659

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions ownCloud version 10.7

Description The issue is related to an incorrect access control, leading to remote information disclosure. Due to a bug in the related API endpoint, an attacker can enumerate all users in a single request by entering three whitespaces. This could also cause higher than average load on a large instance.

Recommendations For ownCloud version 10.7, consider restricting access to the affected API endpoint until a patch is available. As a temporary workaround, avoid using the API endpoint that allows user enumeration to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2021-29659

Affected Products

Owncloud

References · 7

• https://owncloud.com/security-advisories/cve-2021-29659 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29659 · Vendor Advisory
• https://doc.owncloud.com/server/admin_manual/release_notes.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29659 · Security Note
• https://t.me/cvenotify/15039 · Telegram Post
• https://twitter.com/AyushInfo57268/status/1906688816087253250 · Twitter Post
• https://t.me/cvenotify/14733 · Telegram Post