PT-2021-14690 · Cloudbees+1 · Jenkins Cloudbees Cd Plugin+1

Devin Nusbaum · Published 2021-04-21 · Updated 2023-10-25 · CVE-2021-21647

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Jenkins CloudBees CD Plugin versions 1.1.21 and earlier

Description The issue concerns a lack of permission check in an HTTP endpoint, allowing attackers with Item/Read permission to schedule builds of projects without having Item/Build permission. This affects the scheduling of builds via the HTTP endpoint, which requires Item/Build permission.

Recommendations For Jenkins CloudBees CD Plugin versions 1.1.21 and earlier, consider restricting access to the HTTP endpoint to minimize the risk of exploitation until a patch is available. As a temporary workaround, ensure that only users with Item/Build permission can schedule builds of projects.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2021-21647

GHSA-7RX6-4VWV-432G

Affected Products

Jenkins

Jenkins Cloudbees Cd Plugin

References · 8

• https://jenkins.io/security/advisory/2021-04-21/#SECURITY-2309 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-21647 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-7rx6-4vwv-432g · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21647 · Security Note
• https://github.com/jenkinsci/electricflow-plugin/commit/597cbb1d767ae92c44b4cbd9525fa53ddab37117 · Note
• https://github.com/jenkinsci/electricflow-plugin · Note
• http://openwall.com/lists/oss-security/2021/04/21/2 · Note
• https://t.me/cvenotify/13742 · Telegram Post