PT-2021-14397 · Fleet · Fleet

Dsbaha · Published 2021-02-10 · Updated 2022-10-21 · CVE-2021-21296

Positive Technologies (AI Summary)

CVSS v2.0

4.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Fleet versions prior to 3.7.0

Description: The issue allows a malicious actor with a valid node key to send a badly formatted request, causing the Fleet server to exit and resulting in denial of service. This is only possible while a live query is ongoing. The impact is considered low due to the requirement of a valid node key. There is no information disclosure, privilege escalation, or code execution.

Recommendations: For versions prior to 3.7.0, update to Fleet 3.7.0 to resolve the issue. As a temporary workaround, consider restricting access to the Fleet server to minimize the risk of exploitation.

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2021-21296

GHSA-XWH8-9P3F-3X45

Affected Products

Fleet

References · 8

• https://github.com/fleetdm/fleet/commit/f68f4238e83b45b2164e4ed05df14af0f06eaf40 · Patch
• https://osv.dev/vulnerability/CVE-2021-21296 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21296 · Security Note
• https://github.com/fleetdm/fleet/security/advisories/GHSA-xwh8-9p3f-3x45 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21296 · Note
• https://t.me/cvenotify/9751 · Telegram Post
• https://cwe.mitre.org/data/definitions/400.html · Note
• https://npmjs.com/package/fleetctl · Note