PT-2023-22749 · Jenkins · Jenkins Assembla Merge Request Builder Plugin+1

Kevin Guerroudj + 1 · Published 2023-04-12 · Updated 2023-04-20 · CVE-2023-30521

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Jenkins Assembla merge request builder Plugin versions 1.1.13 and earlier

Description A missing permission check in the Jenkins Assembla merge request builder Plugin allows unauthenticated attackers to trigger builds of jobs corresponding to the attacker-specified repository. The plugin provides a webhook endpoint at "/assembla-webhook/" that can be accessed without authentication, enabling this exploit.

Recommendations For Jenkins Assembla merge request builder Plugin versions 1.1.13 and earlier, consider disabling the /assembla-webhook/ endpoint until a patch is available to prevent unauthenticated access. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2023-30521

GHSA-JR86-6J4J-MV45

Affected Products

Jenkins

Jenkins Assembla Merge Request Builder Plugin

References · 8

• https://osv.dev/vulnerability/CVE-2023-30521 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-jr86-6j4j-mv45 · Vendor Advisory
• https://jenkins.io/security/advisory/2023-04-12/#SECURITY-2872 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-30521 · Security Note
• http://openwall.com/lists/oss-security/2023/04/13/3 · Note
• https://t.me/cvenotify/48756 · Telegram Post
• https://t.me/cibsecurity/62000 · Telegram Post
• https://t.me/cvenotify/48190 · Telegram Post