CVE-2020-2253
published 2020-09-16CVE-2020-2253: Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.
PriorityP423medium4.8CVSS 3.1
AVNACHPRNUINSUCLILAN
EPSS
0.69%
52.6th percentile
Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| jenkins | blue_ocean_plugin | — | — |
| jenkins | clearcase_release_plugin | — | — |
| jenkins | complexity_scatter_plot_plugin | — | — |
| jenkins | computer_queue_plugin | — | — |
| jenkins | copy_data_to_workspace_plugin | — | — |
| jenkins | custom_job_icon_plugin | — | — |
| jenkins | description_column_plugin | — | — |
| jenkins | elastest_plugin | — | — |
| jenkins | email_extension | <= 2.75 | — |
| jenkins | email_extension_plugin | — | — |
| jenkins | health_advisor_by_cloudbees_plugin | — | — |
| jenkins | jenkins_controller_in_perfecto_plugin | — | — |
| jenkins | locked_files_report_plugin | — | — |
| jenkins | mailer_plugin | — | — |
| jenkins | mongodb_plugin | — | — |
| jenkins | pipeline_maven_integration_plugin | — | — |
| jenkins | radiator_view_plugin | — | — |
| jenkins | selection_tasks_plugin | — | — |
| jenkins | storable_configs_plugin | — | — |
| jenkins | validating_string_parameter_plugin | — | — |
| jenkins_project | jenkins_email_extension_plugin | unspecified – 2.75 | — |
CVSS provenance
nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
nvdv2.05.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
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OSV
Missing hostname validation in Email Extension Plugin
osv·2022-05-24
CVE-2020-2253 [MEDIUM] Missing hostname validation in Email Extension Plugin
Missing hostname validation in Email Extension Plugin
Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections.
Email Extension Plugin 2.76 validates the SMTP hostname when connecting via TLS by default. In Email Extension Plugin 2.75 and earlier, administrators can set the Java system property `mail.smtp.ssl.checkserveridentity` to `true` on startup to enable this protection. Alternatively, this protection can be enabled (or disabled in the new version) via the 'Advanced Email Properties' field in the plugin’s configuration in Configure System.
In case of problems, this protection can be disabled again by setting `mai
GHSA
Missing hostname validation in Email Extension Plugin
ghsa·2022-05-24
CVE-2020-2253 [MEDIUM] CWE-295 Missing hostname validation in Email Extension Plugin
Missing hostname validation in Email Extension Plugin
Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections.
Email Extension Plugin 2.76 validates the SMTP hostname when connecting via TLS by default. In Email Extension Plugin 2.75 and earlier, administrators can set the Java system property `mail.smtp.ssl.checkserveridentity` to `true` on startup to enable this protection. Alternatively, this protection can be enabled (or disabled in the new version) via the 'Advanced Email Properties' field in the plugin’s configuration in Configure System.
In case of problems, this protection can be disabled again by setting `mai
Jenkins
Jenkins Security Advisory 2020-09-16
vendor_jenkins·2020-09-16·CVSS 4.8
CVE-2020-2252 [MEDIUM] Jenkins Security Advisory 2020-09-16
Title: Jenkins Security Advisory 2020-09-16
Jenkins Security Advisory 2020-09-16
Jenkins Security Home
For Administrators
Overview
Terminology
Vulnerabilities and Scoring
Security Advisories
Security Issues
Advisory Schedule
Vulnerabilities in Plugins
How We Fix Security Issues
For Reporters
Reporting Vulnerabilities
Jenkins CNA
For Maintainers
Overview
Vulnerabilities in Plugins
Jenkins Security Team
About
Contributions
This advisory announces vulnerabilities in the following Jenkins deliverables:
android-lint
Plugin
Blue Ocean
Plugin
chosen-views-tabbar
Plugin
ClearCase Release
Plugin
Computer Queue
Plugin
Copy data to workspace
Plugin
Coverage/Complexity Scat
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2020-09-16
Published