Hostname Validation Flaw in Jenkins Mailer Plugin by Jenkins
CVE-2020-2252

4.8MEDIUM

Key Information:

Vendor
Jenkins
Status
Jenkins Mailer Plugin
Vendor
CVE Published:
16 September 2020

Summary

The Jenkins Mailer Plugin, prior to version 1.33, lacks proper hostname validation when establishing connections with configured SMTP servers. This oversight can potentially expose the system to risks associated with unsecured communication channels, as the plugin does not verify that the server it connects to matches the expected hostname. This could allow attackers to exploit the connection and conduct malicious activities, making it crucial for users to update to the latest version to mitigate such vulnerabilities.

Affected Version(s)

Jenkins Mailer Plugin <= 1.32

Jenkins Mailer Plugin 1.29.1

Jenkins Mailer Plugin 1.31.1

References

https://www.jenkins.io/security/advisory/2020-09-16/#SECU...
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http://www.openwall.com/lists/oss-security/2020/09/16/3
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CVSS V3.1

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.